version 1.3, 2002/07/26 21:50:12
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version 1.97, 2005/03/01 00:07:21
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# The LearningOnline Network with CAPA |
# The LearningOnline Network with CAPA |
# (Publication Handler |
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# |
# |
# $Id$ |
# $Id$ |
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# http://www.lon-capa.org/ |
# http://www.lon-capa.org/ |
# |
# |
# (Navigate problems for statistical reports |
# (Navigate problems for statistical reports |
# YEAR=2001 |
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# 5/5,7/9,7/25/1,8/11,9/13,9/26,10/5,10/9,10/22,10/26 Behrouz Minaei |
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# 11/1,11/4,11/16,12/14,12/16,12/18,12/20,12/31 Behrouz Minaei |
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# YEAR=2002 |
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# 1/22,2/1,2/6,2/25,3/2,3/6,3/17,3/21,3/22,3/26,4/7,5/6 Behrouz Minaei |
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# 5/12,5/14,5/15,5/19,5/26,7/16,7/25 Behrouz Minaei |
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# |
# |
### |
############################################### |
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############################################### |
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package Apache::lonproblemstatistics; |
=pod |
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=head1 NAME |
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lonproblemstatistics |
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=head1 SYNOPSIS |
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Routines to present problem statistics to instructors via tables, |
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Excel files, and plots. |
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=over 4 |
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=cut |
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############################################### |
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############################################### |
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package Apache::lonproblemstatistics; |
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use strict; |
use strict; |
use Apache::lonnet(); |
use Apache::lonnet(); |
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use Apache::loncommon(); |
use Apache::lonhtmlcommon; |
use Apache::lonhtmlcommon; |
use Apache::loncoursedata; |
use Apache::loncoursedata; |
use GDBM_File; |
use Apache::lonstatistics; |
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use LONCAPA::lonmetadata(); |
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use Apache::lonlocal; |
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use Spreadsheet::WriteExcel; |
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use Apache::lonstathelpers(); |
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use Time::HiRes; |
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my @StatsArray; |
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my %SeqStat; # keys are symbs, values are hash refs |
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## |
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## Localization notes: |
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## |
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## in @Fields[0]->{'long_title'} is placed in Excel files and is used as the |
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## header for plots created with Graph.pm, both of which more than likely do |
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## not support localization. |
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## |
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# |
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# |
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## |
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## Description of Field attributes |
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## |
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## Attribute Required Value Meaning or Use |
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## |
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## name yes any scalar Used to uniquely identify field |
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## title yes any scalar This is what the user sees to identify |
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## the field. Passed through &mt(). |
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## long_title yes any scalar Used as graph heading and in excel |
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## output. NOT translated |
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## align no (left|right|center) HTML cell contents alignment |
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## color yes html color HTML cell background color |
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## used to visually group statistics |
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## special no (link) Indicates a link, target is name.link |
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## Currently set in &get_statistics() |
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## graphable no (yes|no) Can a bar graph of the field be |
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## produced? |
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## sortable no (yes|no) Should a sort link be put in the |
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## column header? |
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## selectable yes (yes|no) Can the column be removed from the |
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## statistics display? |
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## selected yes (yes|no) Is the column selected by default? |
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## |
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## format no sprintf format string |
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## |
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## excel_format no excel format type |
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## (see &Apache::loncommon::define_excel_formats |
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my @Fields = ( |
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{ name => 'problem_num', |
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title => 'P#', |
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align => 'right', |
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color => '#FFFFE6', |
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selectable => 'no', |
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defaultselected => 'yes', |
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}, |
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{ name => 'container', |
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title => 'Sequence or Folder', |
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align => 'left', |
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color => '#FFFFE6', |
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sortable => 'yes', |
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selectable => 'no', |
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defaultselected => 'yes', |
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}, |
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{ name => 'title', |
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title => 'Title', |
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align => 'left', |
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color => '#FFFFE6', |
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special => 'link', |
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sortable => 'yes', |
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selectable => 'no', |
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defaultselected => 'yes', |
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}, |
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{ name => 'part', |
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title => 'Part', |
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align => 'left', |
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color => '#FFFFE6', |
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selectable => 'no', |
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defaultselected => 'yes', |
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}, |
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{ name => 'num_students', |
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title => '#Stdnts', |
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align => 'right', |
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color => '#EEFFCC', |
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format => '%d', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Number of Students Attempting Problem', |
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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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{ name => 'tries', |
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title => 'Tries', |
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align => 'right', |
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color => '#EEFFCC', |
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format => '%d', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Total Number of Tries', |
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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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{ name => 'max_tries', |
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title => 'Max Tries', |
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align => 'right', |
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color => '#DDFFFF', |
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format => '%d', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Maximum Number of Tries', |
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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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{ name => 'min_tries', |
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title => 'Min Tries', |
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align => 'right', |
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color => '#DDFFFF', |
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format => '%d', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Minumum Number of Tries', |
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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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{ name => 'mean_tries', |
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title => 'Mean Tries', |
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align => 'right', |
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color => '#DDFFFF', |
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format => '%5.2f', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Average Number of Tries', |
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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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{ name => 'std_tries', |
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title => 'S.D. tries', |
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align => 'right', |
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color => '#DDFFFF', |
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format => '%5.2f', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Standard Deviation of Number of Tries', |
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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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{ name => 'skew_tries', |
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title => 'Skew Tries', |
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align => 'right', |
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color => '#DDFFFF', |
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format => '%5.2f', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Skew of Number of Tries', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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{ name => 'num_solved', |
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title => '#YES', |
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align => 'right', |
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color => '#FFDDDD', |
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format => '%4.1f',# format => '%d', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Number of Students able to Solve', |
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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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{ name => 'num_override', |
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title => '#yes', |
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align => 'right', |
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color => '#FFDDDD', |
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format => '%4.1f',# format => '%d', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Number of Students given Override', |
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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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{ name => 'tries_per_correct', |
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title => 'tries/correct', |
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align => 'right', |
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color => '#FFDDDD', |
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format => '%4.1f', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Tries per Correct Answer', |
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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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{ name => 'num_wrong', |
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title => '#Wrng', |
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align => 'right', |
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color => '#FFDDDD', |
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format => '%4.1f', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Number of students whose final answer is wrong', |
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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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{ name => 'per_wrong', |
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title => '%Wrng', |
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align => 'right', |
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color => '#FFDDDD', |
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format => '%4.1f', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Percent of students whose final answer is wrong', |
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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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{ name => 'deg_of_diff', |
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title => 'DoDiff', |
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align => 'right', |
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color => '#FFFFE6', |
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format => '%5.2f', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Degree of Difficulty'. |
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'[ 1 - ((#YES+#yes) / Tries) ]', |
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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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{ name => 'deg_of_disc', |
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title => 'DoDisc', |
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align => 'right', |
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color => '#FFFFE6', |
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format => '%4.2f', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Degree of Discrimination', |
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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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## duedate included for research purposes. Commented out most of the time. |
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# { name => 'duedate', |
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# title => 'Due Date', |
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# align => 'left', |
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# color => '#FFFFFF', |
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# sortable => 'yes', |
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# graphable => 'no', |
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# long_title => 'Due date of resource for instructor', |
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# selectable => 'no', |
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# defaultselected => 'yes', |
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# }, |
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## opendate included for research purposes. Commented out most of the time. |
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# { name => 'opendate', |
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# title => 'Open Date', |
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# align => 'left', |
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# color => '#FFFFFF', |
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# sortable => 'yes', |
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# graphable => 'no', |
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# long_title => 'date resource became answerable', |
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# selectable => 'no', |
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# defaultselected => 'yes', |
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# }, |
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## symb included for research purposes. Commented out most of the time. |
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# { name => 'symb', |
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# title => 'Symb', |
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# align => 'left', |
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# color => '#FFFFFF', |
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# sortable => 'yes', |
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# graphable => 'no', |
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# long_title => 'Unique LON-CAPA identifier for problem', |
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# selectable => 'no', |
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# defaultselected => 'yes', |
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# }, |
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## resptypes included for research purposes. Commented out most of the time. |
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# { name => 'resptypes', |
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# title => 'Response Types', |
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# align => 'left', |
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# color => '#FFFFFF', |
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# sortable => 'no', |
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# graphable => 'no', |
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# long_title => 'Response Types used in this problem', |
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# selectable => 'no', |
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# defaultselected => 'yes', |
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# }, |
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## maxtries included for research purposes. Commented out most of the time. |
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# { name => 'maxtries', |
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# title => 'Maxtries', |
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# align => 'left', |
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# color => '#FFFFFF', |
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# sortable => 'no', |
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# graphable => 'no', |
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# long_title => 'Maximum number of tries', |
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# selectable => 'no', |
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# defaultselected => 'yes', |
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# }, |
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## hinttries included for research purposes. Commented out most of the time. |
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# { name => 'hinttries', |
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# title => 'hinttries', |
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# align => 'left', |
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# color => '#FFFFFF', |
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# sortable => 'no', |
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# graphable => 'no', |
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# long_title => 'Number of tries before a hint appears', |
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# selectable => 'no', |
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# defaultselected => 'yes', |
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# }, |
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## weight included for research purposes. Commented out most of the time. |
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# { name => 'weight', |
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# title => 'weight', |
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# align => 'right', |
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# color => '#FFFFFF', |
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# sortable => 'no', |
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# graphable => 'no', |
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# long_title => 'Problem weight (for instructor)', |
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# selectable => 'no', |
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# defaultselected => 'yes', |
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# }, |
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); |
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my @SeqFields = ( |
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{ name => 'title', |
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title => 'Sequence', |
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align => 'left', |
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color => '#FFFFE6', |
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special => 'no', |
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sortable => 'no', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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{ name => 'items', |
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title => '#Items', |
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align => 'right', |
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color => '#FFFFE6', |
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format => '%4d', |
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sortable => 'no', |
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graphable => 'no', |
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long_title => 'Number of Items in Sequence', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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{ name => 'scoremean', |
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title => 'Score Mean', |
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align => 'right', |
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color => '#FFFFE6', |
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format => '%4.2f', |
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sortable => 'no', |
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graphable => 'no', |
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long_title => 'Mean Sequence Score', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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{ name => 'scorestd', |
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title => 'Score STD', |
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align => 'right', |
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color => '#FFFFE6', |
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format => '%4.2f', |
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sortable => 'no', |
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graphable => 'no', |
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long_title => 'Standard Deviation of Sequence Scores', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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{ name => 'scoremax', |
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title => 'Score Max', |
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align => 'right', |
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color => '#FFFFE6', |
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format => '%4.2f', |
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sortable => 'no', |
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graphable => 'no', |
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long_title => 'Maximum Sequence Score', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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{ name => 'scoremin', |
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title => 'Score Min', |
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align => 'right', |
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color => '#FFFFE6', |
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format => '%4.2f', |
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sortable => 'no', |
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graphable => 'no', |
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long_title => 'Minumum Sequence Score', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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{ name => 'scorecount', |
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title => 'Score N', |
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align => 'right', |
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color => '#FFFFE6', |
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format => '%4d', |
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sortable => 'no', |
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graphable => 'no', |
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long_title => 'Number of Students in score computations', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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{ name => 'countmean', |
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title => 'Count Mean', |
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align => 'right', |
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color => '#FFFFFF', |
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format => '%4.2f', |
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sortable => 'no', |
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graphable => 'no', |
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long_title => 'Mean Sequence Score', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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{ name => 'countstd', |
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title => 'Count STD', |
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align => 'right', |
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color => '#FFFFFF', |
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format => '%4.2f', |
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sortable => 'no', |
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graphable => 'no', |
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long_title => 'Standard Deviation of Sequence Scores', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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{ name => 'countmax', |
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title => 'Count Max', |
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align => 'right', |
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color => '#FFFFFF', |
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format => '%4.2f', |
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sortable => 'no', |
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graphable => 'no', |
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long_title => 'Maximum Number of Correct Problems', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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{ name => 'countmin', |
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title => 'Count Min', |
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align => 'right', |
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color => '#FFFFFF', |
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format => '%4.2f', |
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sortable => 'no', |
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graphable => 'no', |
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long_title => 'Minumum Number of Correct Problems', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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{ name => 'count', |
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title => 'Count N', |
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align => 'right', |
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color => '#FFFFFF', |
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format => '%4d', |
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sortable => 'no', |
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graphable => 'no', |
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long_title => 'Number of Students in score computations', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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{ name => 'KR-21', |
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title => 'KR-21', |
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align => 'right', |
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color => '#FFAAAA', |
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format => '%4.2f', |
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sortable => 'no', |
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graphable => 'no', |
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long_title => 'KR-21 reliability statistic', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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); |
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my %SelectedFields; |
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sub parse_field_selection { |
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# |
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# Pull out the defaults |
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if (! defined($ENV{'form.fieldselections'})) { |
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$ENV{'form.fieldselections'} = []; |
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foreach my $field (@Fields) { |
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next if ($field->{'selectable'} ne 'yes'); |
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if ($field->{'defaultselected'} eq 'yes') { |
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push(@{$ENV{'form.fieldselections'}},$field->{'name'}); |
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} |
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} |
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} |
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# |
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# Make sure the data we are plotting is there |
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my %NeededFields; |
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if (exists($ENV{'form.plot'}) && $ENV{'form.plot'} ne '' && |
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$ENV{'form.plot'} ne 'none') { |
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if ($ENV{'form.plot'} eq 'degrees') { |
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$NeededFields{'deg_of_diff'}++; |
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$NeededFields{'deg_of_disc'}++; |
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} elsif ($ENV{'form.plot'} eq 'tries statistics') { |
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$NeededFields{'mean_tries'}++; |
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$NeededFields{'std_tries'}++; |
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$NeededFields{'problem_num'}++; |
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} else { |
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$NeededFields{$ENV{'form.plot'}}++; |
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} |
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} |
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# |
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# This should not happen, but in case it does... |
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if (ref($ENV{'form.fieldselections'}) ne 'ARRAY') { |
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$ENV{'form.fieldselections'} = [$ENV{'form.fieldselections'}]; |
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} |
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# |
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# Set the field data and the selected fields (for easier checking) |
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undef(%SelectedFields); |
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foreach my $field (@Fields) { |
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if ($field->{'selectable'} ne 'yes') { |
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$field->{'selected'} = 'yes'; |
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} else { |
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$field->{'selected'} = 'no'; |
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} |
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if (exists($NeededFields{$field->{'name'}})) { |
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$field->{'selected'} = 'yes'; |
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$SelectedFields{$field->{'name'}}++; |
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} |
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foreach my $selection (@{$ENV{'form.fieldselections'}}) { |
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if ($selection eq $field->{'name'} || $selection eq 'all') { |
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$field->{'selected'} = 'yes'; |
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$SelectedFields{$field->{'name'}}++; |
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} |
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} |
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} |
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# |
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# Always show all the sequence statistics (for now) |
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foreach my $field (@SeqFields) { |
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$field->{'selected'} = 'yes'; |
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} |
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return; |
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} |
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sub field_selection_input { |
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my $Str = '<select name="fieldselections" multiple size="5">'."\n"; |
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$Str .= '<option value="all">all</option>'."\n"; |
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foreach my $field (@Fields) { |
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next if ($field->{'selectable'} ne 'yes'); |
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$Str .= ' <option value="'.$field->{'name'}.'" '; |
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if ($field->{'selected'} eq 'yes') { |
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$Str .= 'selected '; |
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} |
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$Str .= '>'.$field->{'title'}.'</option>'."\n"; |
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} |
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$Str .= "</select>\n"; |
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} |
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#my %mapsort; |
############################################### |
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############################################### |
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sub BuildProblemStatisticsPage { |
=pod |
my ($cacheDB, $students, $courseID, $c, $r,%color)=@_; |
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my %cache; |
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#my %DoDiff; |
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unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER,0640)) { |
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return '<html><body>Unable to tie database.</body></html>'; |
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} |
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my $Ptr = ''; |
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$Ptr .= '<table border="0"><tbody>'; |
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$Ptr .= '<tr><td align="right"><b>Select Map</b></td>'."\n"; |
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$Ptr .= '<td align="left">'; |
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$Ptr .= &Apache::lonhtmlcommon::MapOptions(\%cache, 'ProblemStatistics'); |
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$Ptr .= '</td></tr>'."\n"; |
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$Ptr .= &AscendOrderOptions($cache{'Ascend'}); |
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$Ptr .= &ProblemStatisticsButtons($cache{'DisplayFormat'}); |
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$Ptr .= '</table>'; |
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$Ptr .= &ProblemStatisticsLegend(); |
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untie(%cache); |
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foreach (@$students) { |
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my $courseData = |
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&Apache::loncoursedata::DownloadCourseInformation($_, $courseID); |
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last if ($c->aborted()); |
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if(tie(%cache,'GDBM_File',$cacheDB,&GDBM_WRCREAT,0640)) { |
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&Apache::loncoursedata::ProcessStudentData(\%cache, |
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$courseData, $_); |
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untie(%cache); |
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} |
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} |
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if($c->aborted()) { return $Ptr; } |
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|
|
unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER,0640)) { |
|
return '<html><body>Unable to tie database.</body></html>'; |
|
} |
|
my $discriminantFactor; |
|
my @list=(); |
|
my %Discuss=&Apache::loncoursedata::LoadDiscussion($courseID); |
|
my $index=0; |
|
foreach (@$students) { |
|
$index++; |
|
#&Apache::lonstatistics::Update_PrgWin(++$index,$r); |
|
$discriminantFactor = &ExtractStudentData(\%cache, $_, \@list, |
|
\%Discuss, $r); |
|
} |
|
#&Apache::lonstatistics::Close_PrgWin($r); |
|
|
|
my ($upper, $lower) = &Discriminant($discriminantFactor); |
|
my %Header = (0,"Homework Sets Order",1,"#Stdnts",2,"Tries",3,"Mod", |
|
4,"Mean",5,"#YES",6,"#yes",7,"%Wrng",8,"DoDiff", |
|
9,"S.D.",10,"Skew.",11,"D.F.1st",12,"D.F.2nd", 13, "Disc."); |
|
|
|
my %GraphDat= &BuildStatisticsTable(\%cache, $discriminantFactor, \@list, |
|
\%Header, $students, $r, \%color); |
|
|
|
untie(%cache); |
=item &CreateInterface() |
|
|
return $Ptr; |
Create the main intereface for the statistics page. Allows the user to |
} |
select sections, maps, and output. |
|
|
sub BuildDiffGraph { |
=cut |
my ($r)=@_; |
|
|
|
my $graphData = &GetGraphData('DiffGraph', $r); |
############################################### |
return '<IMG src="/cgi-bin/graph.gif?'.$graphData.'" />'; |
############################################### |
|
sub CreateInterface { |
|
my ($r) = @_; |
|
# |
|
&parse_field_selection(); |
|
# |
|
my $Str = ''; |
|
$Str .= &Apache::lonhtmlcommon::breadcrumbs |
|
(undef,'Overall Problem Statistics','Statistics_Overall_Key'); |
|
$Str .= '<table cellspacing="5">'."\n"; |
|
$Str .= '<tr>'; |
|
$Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>'; |
|
$Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>'; |
|
$Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>'; |
|
$Str .= '<td align="center"><b>'.&mt('Statistics').'</b></td>'; |
|
$Str .= '<td rowspan="2">'. |
|
&Apache::lonstathelpers::limit_by_time_form().'</td>'; |
|
$Str .= '</tr>'."\n"; |
|
# |
|
$Str .= '<tr><td align="center">'."\n"; |
|
$Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5); |
|
$Str .= '</td><td align="center">'; |
|
$Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5); |
|
$Str .= '</td><td align="center">'; |
|
# |
|
$Str .= &Apache::lonstatistics::map_select('Maps','multiple,all',5); |
|
$Str .= '</td><td>'.&field_selection_input(); |
|
$Str .= '</td></tr>'."\n"; |
|
$Str .= '</table>'."\n"; |
|
# |
|
$Str .= '<p>'.&mt('Status: [_1]', |
|
'<input type="text" '. |
|
'name="stats_status" size="60" value="" />' |
|
). |
|
'</nobr></p>'; |
|
# |
|
$Str .= '<input type="submit" name="GenerateStatistics" value="'. |
|
&mt('Generate Statistics').'" />'; |
|
$Str .= ' 'x5; |
|
$Str .= 'Plot '.&plot_dropdown().(' 'x10); |
|
# |
|
return $Str; |
} |
} |
|
|
sub BuildWrongGraph { |
############################################### |
my ($r)=@_; |
############################################### |
|
|
my $graphData = &GetGraphData('WrongGraph', $r); |
=pod |
return '<IMG src="/cgi-bin/graph.gif?'.$graphData.'" />'; |
|
} |
|
|
|
#---- Activity log ------------------------------------------------------- |
=item &BuildProblemStatisticsPage() |
|
|
sub LoadDoDiffFile { |
Main interface to problem statistics. |
my $file="/home/minaeibi/183d.txt"; |
|
open(FILEID, "<$file"); |
|
my $line=<FILEID>; |
|
my %DoDiff=(); |
|
my @Act=split('&',$line); |
|
|
|
# $r->print('<br>'.$#Act); |
|
for(my $n=0;$n<=$#Act;$n++){ |
|
my ($res,$Degree)=split('@',$Act[$n]); |
|
$DoDiff{$res}=$Degree; |
|
} |
|
|
|
return \%DoDiff; |
|
} |
|
|
|
sub LoadClassFile { |
|
my $file="/home/minaeibi/class.txt"; |
|
open(FILEID, "<$file"); |
|
my $line; |
|
my %Grade=(); |
|
while ($line=<FILEID>) { |
|
my ($id,$ex1,$ex2,$ex3,$ex4,$hw,$final,$grade)=split(' ',$line); |
|
$Grade{$id}=$grade; |
|
} |
|
return \%Grade; |
|
} |
|
|
|
#------- Classification |
|
sub Classify { |
|
my ($DiscFac, $students)=@_; |
|
my ($fileGrade) = &LoadClassFile(); |
|
my $Count=0; |
|
my @List=(); |
|
my @LS=(); |
|
my @LF=(); |
|
my @LM=(); |
|
my $cf=0; |
|
my $cs=0; |
|
my $cm=0; |
|
foreach (keys(%$DiscFac)){ |
|
my @l=split(/\:/,$_); |
|
if (!($students->{$l[1]})) {next;} |
|
my $Grade=$fileGrade->{$students->{$l[1]}}; |
|
if( $Grade > 3 ) { |
|
$cs++; |
|
push(@LS,("$l[6],$l[5],$l[4],$l[7],$l[8],$l[9],Successful")); |
|
} elsif ( $Grade > 2 ) { |
|
$cm++; |
|
push(@LM,("$l[6],$l[5],$l[4],$l[7],$l[8],$l[9],Average")); |
|
} else { |
|
$cf++; |
|
push(@LF,("$l[6],$l[5],$l[4],$l[7],$l[8],$l[9],Failed")); |
|
} |
|
} |
|
my $Str = ''; |
|
for(my $n=0;$n<$cs;$n++){$Str .= '<br>'.$LS[$n];} |
|
for(my $n=0;$n<$cm;$n++){$Str .= '<br>'.$LM[$n];} |
|
for(my $n=0;$n<$cf;$n++){$Str .= '<br>'.$LF[$n];} |
|
|
|
return $Str; |
=cut |
} |
|
|
|
sub ProcAct { |
############################################### |
# return; |
############################################### |
my ($Act,$Submit)=@_; |
my $navmap; |
my @Act=split(/\@/,$Act); |
my @sequences; |
@Act = sort(@Act); |
|
|
|
##$r->print('<br>'.$#Act); |
sub BuildProblemStatisticsPage { |
##for(my $n=0;$n<=$#Act;$n++){ |
my ($r,$c)=@_; |
## $r->print('<br>n='.$n.')'.$Act[$n]); |
undef($navmap); |
## } |
undef(@sequences); |
|
# |
|
my %Saveable_Parameters = ('Status' => 'scalar', |
|
'statsoutputmode' => 'scalar', |
|
'Section' => 'array', |
|
'StudentData' => 'array', |
|
'Maps' => 'array', |
|
'fieldselections'=> 'array'); |
|
&Apache::loncommon::store_course_settings('statistics', |
|
\%Saveable_Parameters); |
|
&Apache::loncommon::restore_course_settings('statistics', |
|
\%Saveable_Parameters); |
|
# |
|
&Apache::lonstatistics::PrepareClasslist(); |
|
# |
|
# Clear the package variables |
|
undef(@StatsArray); |
|
undef(%SeqStat); |
|
# |
|
# Finally let the user know we are here |
|
my $interface = &CreateInterface($r); |
|
$r->print($interface); |
|
$r->print('<input type="hidden" name="sortby" value="'.$ENV{'form.sortby'}. |
|
'" />'); |
|
# |
|
my @CacheButtonHTML = |
|
&Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status'); |
|
my $Str; |
|
foreach my $html (@CacheButtonHTML) { |
|
$Str.=$html.(' 'x5); |
|
} |
|
# |
|
$r->print($Str); |
|
if (! exists($ENV{'form.firstrun'})) { |
|
$r->print('<h3>'. |
|
&mt('Press "Generate Statistics" when you are ready.'). |
|
'</h3><p>'. |
|
&mt('It may take some time to update the student data '. |
|
'for the first analysis. Future analysis this session '. |
|
' will not have this delay.'). |
|
'</p>'); |
|
return; |
|
} |
|
$r->rflush(); |
|
# |
|
# This probably does not need to be done each time we are called, but |
|
# it does not slow things down noticably. |
|
&Apache::loncoursedata::populate_weight_table(); |
|
# |
|
if (exists($ENV{'form.Excel'})) { |
|
&Excel_output($r); |
|
} else { |
|
$r->print('<input type="submit" name="Excel" value="'. |
|
&mt('Produce Excel Output').'" />'.' 'x5); |
|
$r->rflush(); |
|
my $count = 0; |
|
($navmap,@sequences) = |
|
&Apache::lonstatistics::selected_sequences_with_assessments(); |
|
if (! ref($navmap)) { |
|
$r->print('<h1>'.&mt('A course-wide error occured.').'</h1>'. |
|
'<h3>'.$navmap.'</h3>'); |
|
return; |
|
} |
|
foreach my $seq (@sequences) { |
|
my @resources = |
|
&Apache::lonstathelpers::get_resources($navmap,$seq); |
|
$count += scalar(@resources); |
|
} |
|
if ($count > 10) { |
|
$r->print('<h2>'. |
|
&mt('Compiling statistics for [_1] problems',$count). |
|
'</h2>'); |
|
if ($count > 30) { |
|
$r->print('<h3>'.&mt('This will take some time.').'</h3>'); |
|
} |
|
$r->rflush(); |
|
} |
|
# |
|
my $sortby = $ENV{'form.sortby'}; |
|
$sortby = 'container' if (! defined($sortby) || $sortby =~ /^\s*$/); |
|
my $plot = $ENV{'form.plot'}; |
|
if ($plot eq '' || $plot eq 'none') { |
|
undef($plot); |
|
} |
|
if ($sortby eq 'container' && ! defined($plot)) { |
|
&output_sequence_statistics($r); |
|
&output_html_by_sequence($r); |
|
} else { |
|
if (defined($plot)) { |
|
&make_plot($r,$plot); |
|
} |
|
&output_html_stats($r); |
|
&output_sequence_statistics($r); |
|
} |
|
} |
|
return; |
|
} |
|
|
# my $Beg=$Act[0]; |
sub output_sequence_statistics { |
my $Dif=$Submit-$Act[0]; |
my ($r) = @_; |
$Dif = ($Dif>0) ? ($Dif/3600) : 0; |
my $c=$r->connection(); |
|
$r->print('<h2>'.&mt('Sequence Statistics'). |
|
&Apache::loncommon::help_open_topic('Statistics_Sequence'). |
|
'</h2>'); |
|
$r->print('<table border="0"><tr><td bgcolor="#777777">'."\n". |
|
'<table border="0" cellpadding="3">'."\n". |
|
'<tr bgcolor="#FFFFE6">'); |
|
$r->print(&sequence_html_header()); |
|
foreach my $seq (@sequences) { |
|
last if ($c->aborted); |
|
&compute_sequence_statistics($seq); |
|
$r->print(&sequence_html_output($seq)); |
|
} |
|
$r->print('</table>'); |
|
$r->print('</table>'); |
|
$r->rflush(); |
|
return; |
|
} |
|
|
# $r->print('<br>Access Number = '.$#Act.'<br>Submit Time='.$Submit.'<br>First Access='.$Act[0].'<br>Last Access='.$Act[$#Act].'<br> Submit - First = <b>'.$Dif.'</b>'); |
|
|
|
|
########################################################## |
|
########################################################## |
|
## |
|
## HTML output routines |
|
## |
|
########################################################## |
|
########################################################## |
|
sub output_html_by_sequence { |
|
my ($r) = @_; |
|
my $c = $r->connection(); |
|
$r->print(&html_preamble()); |
|
# |
|
foreach my $seq (@sequences) { |
|
last if ($c->aborted); |
|
$r->print("<h3>".$seq->compTitle."</h3>". |
|
'<table border="0"><tr><td bgcolor="#777777">'."\n". |
|
'<table border="0" cellpadding="3">'."\n". |
|
'<tr bgcolor="#FFFFE6">'. |
|
&statistics_table_header('no container')."</tr>\n"); |
|
my @Data = &compute_statistics_on_sequence($seq); |
|
foreach my $data (@Data) { |
|
$r->print('<tr>'.&statistics_html_table_data($data, |
|
'no container'). |
|
"</tr>\n"); |
|
} |
|
$r->print('</table>'."\n".'</table>'."\n"); |
|
$r->rflush(); |
|
} |
|
return; |
|
} |
|
|
#time spent for solving the problem |
sub output_html_stats { |
# $r->print('<br>Def'.($Act[$#Act-1]-$Act[0])); |
my ($r)=@_; |
|
&compute_all_statistics($r); |
|
$r->print(&html_preamble()); |
|
&sort_data($ENV{'form.sortby'}); |
|
# |
|
my $count=0; |
|
foreach my $data (@StatsArray) { |
|
if ($count++ % 50 == 0) { |
|
$r->print("</table>\n</table>\n"); |
|
$r->print('<table border="0"><tr><td bgcolor="#777777">'."\n". |
|
'<table border="0" cellpadding="3">'."\n". |
|
'<tr bgcolor="#FFFFE6">'. |
|
'<tr bgcolor="#FFFFE6">'. |
|
&statistics_table_header(). |
|
"</tr>\n"); |
|
} |
|
$r->print('<tr>'.&statistics_html_table_data($data)."</tr>\n"); |
|
} |
|
$r->print("</table>\n</table>\n"); |
|
return; |
|
} |
|
|
return $Dif; |
sub html_preamble { |
|
my $Str=''; |
|
$Str .= "<h2>". |
|
$ENV{'course.'.$ENV{'request.course.id'}.'.description'}. |
|
"</h2>\n"; |
|
my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits(); |
|
if (defined($starttime) || defined($endtime)) { |
|
# Inform the user what the time limits on the data are. |
|
$Str .= '<h3>'.&mt('Statistics on submissions from [_1] to [_2]', |
|
&Apache::lonlocal::locallocaltime($starttime), |
|
&Apache::lonlocal::locallocaltime($endtime) |
|
).'</h3>'; |
|
} |
|
$Str .= "<h3>".&mt('Compiled on [_1]', |
|
&Apache::lonlocal::locallocaltime(time))."</h3>"; |
|
return $Str; |
} |
} |
|
|
sub LoadActivityLog { |
|
# my $CacheDB = "/home/minaeibi/act183.log.cache"; |
|
my $CacheDB = "/home/httpd/perl/tmp/act183.log.cache"; |
|
|
|
my %Activity; |
############################################### |
if (-e "$CacheDB") { |
############################################### |
if (tie(%Activity,'GDBM_File',"$CacheDB",&GDBM_READER,0640)) { |
## |
return; |
## Misc HTML output routines |
|
## |
|
############################################### |
|
############################################### |
|
sub statistics_html_table_data { |
|
my ($data,$options) = @_; |
|
my $row = ''; |
|
foreach my $field (@Fields) { |
|
next if ($options =~ /no $field->{'name'}/); |
|
next if ($field->{'selected'} ne 'yes'); |
|
$row .= '<td bgcolor="'.$field->{'color'}.'"'; |
|
if (exists($field->{'align'})) { |
|
$row .= ' align="'.$field->{'align'}.'"'; |
|
} |
|
$row .= '>'; |
|
if (exists($field->{'special'}) && $field->{'special'} eq 'link') { |
|
$row .= '<a href="'.$data->{$field->{'name'}.'.link'}.'">'; |
} |
} |
else { |
if (exists($field->{'format'}) && $data->{$field->{'name'}} !~ /[A-Z]/i) { |
# $r->print("Unable to tie log Cache hash to db file"); |
$row .= sprintf($field->{'format'},$data->{$field->{'name'}}); |
|
} else { |
|
$row .= $data->{$field->{'name'}}; |
} |
} |
} |
if (exists($field->{'special'}) && $field->{'special'} eq 'link') { |
else { |
$row.= '</a>'; |
if (tie(%Activity,'GDBM_File',$CacheDB,&GDBM_WRCREAT,0640)) { |
|
foreach (keys %Activity) {delete $Activity{$_};} |
|
&Build_log(\%Activity); |
|
} |
|
else { |
|
# $r->print("Unable to tie log Build hash to db file"); |
|
} |
} |
|
$row .= '</td>'; |
} |
} |
return \%Activity; |
return $row; |
} |
} |
|
|
sub Build_log { |
sub statistics_table_header { |
my ($Activity)=@_; |
my ($options) = @_; |
my $file="/home/minaeibi/act183.log"; |
my $header_row; |
open(FILEID, "<$file"); |
foreach my $field (@Fields) { |
my $line; |
next if ($options =~ /no $field->{'name'}/); |
my $count=0; |
next if ($field->{'selected'} ne 'yes'); |
while ($line=<FILEID>) { |
$header_row .= '<th>'; |
my ($time,$machine,$what)=split(':',$line); |
if (exists($field->{'sortable'}) && $field->{'sortable'} eq 'yes') { |
$what=&Apache::lonnet::unescape($what); |
$header_row .= '<a href="javascript:'. |
my @accesses=split('&',$what); |
'document.Statistics.sortby.value='."'".$field->{'name'}."'". |
|
';document.Statistics.submit();">'; |
foreach my $access (@accesses) { |
} |
|
$header_row .= &mt($field->{'title'}); |
$count++; |
if ($options =~ /sortable/) { |
|
$header_row.= '</a>'; |
my ($date,$resource,$who,$domain,$post,@posts)=split(':',$access); |
} |
if (!$resource) { next; } |
if ($options !~ /no plots/ && |
my $res=&Apache::lonnet::unescape($resource); |
exists($field->{'graphable'}) && |
if (($res =~ /\.problem/)) { |
$field->{'graphable'} eq 'yes') { |
$Activity->{$who.':'.$res}.=$date.'@'; |
$header_row.=' ('; |
#$r->print('<br>'.$time.':'.$who.'---'.$res); |
$header_row .= '<a href="javascript:'. |
&Update_PrgInit($count); |
"document.Statistics.plot.value='$field->{'name'}'". |
|
';document.Statistics.submit();">'; |
} |
$header_row .= &mt('plot').'</a>)'; |
} |
|
} |
|
|
|
# my $c=1; |
|
# foreach (sort keys %Activity) { |
|
# $r->print('<br>'.$c.')'.$_.' ... '.$Activity{$_}); |
|
# $c++; |
|
# } |
|
|
|
} |
|
|
|
sub Activity { |
|
my $file="/home/minaeibi/activity.log"; |
|
my $userid='adamsde1'; |
|
# $r->print("<br>Using $file"); |
|
# $r->rflush(); |
|
open(FILEID, "<$file"); |
|
my $line; |
|
my @allaccess; |
|
my $Count=0; |
|
while ($line=<FILEID>) { |
|
my ($time,$machine,$what)=split(':',$line); |
|
$what=&Apache::lonnet::unescape($what); |
|
my @accesses=split('&',$what); |
|
foreach my $access (@accesses) { |
|
my ($date,$resource,$who,$domain,$post,@posts)=split(':',$access); |
|
#if ($who ne $userid) { next; } |
|
if (!$resource) { next; } |
|
my $res=&Apache::lonnet::unescape($resource); |
|
if (($res =~ /\.(sequence|problem|htm|html|page)/)) { |
|
$Count++; |
|
###888 $r->print("<br>$Count) ".localtime($date).": $who --> $res"); |
|
# if ($post) { |
|
# $Count++; |
|
# $r->print("<br><b>$Count) Sent data ".join(':', |
|
# &Apache::lonnet::unescape(@posts)).'</b>'); |
|
# } |
|
###888 $r->rflush(); |
|
} |
|
#push (@allaccess,unescape($access)); |
|
#print $machine; |
|
} |
|
} |
|
# @allaccess=sort(@allaccess); |
|
# $Count=0; |
|
# foreach my $access (@allaccess) { |
|
# my ($date,$resource,$who,$domain,$post,@posts)=split(':',$access); |
|
# $Count++; |
|
# $r->print("<br>$Count) $date: $who --> $resource"); |
|
# $r->rflush(); |
|
# if ($post) { |
|
# $r->print("<br><b>Sent data ".join(':',unescape(@posts)).'</b>'); |
|
# } |
|
# } |
|
} |
|
|
|
#---- END Activity log --------------------------------------------------- |
|
|
|
#---- Problem Statistics Web Page --------------------------------------- |
|
|
|
#------- Processing upperlist and lowerlist according to each problem |
|
sub ProcessDiscriminant { |
|
my ($List) = @_; |
|
my @sortedList = sort (@$List); |
|
my $Count = scalar @sortedList; |
|
my $Problem; |
|
my @Dis; |
|
my $Slvd=0; |
|
my $tmp; |
|
my $Sum1=0; |
|
my $Sum2=0; |
|
my $nIndex=0; |
|
my $nStudent=0; |
|
my %Proc=undef; |
|
while ($nIndex<$Count) { |
|
($Problem,$tmp)=split(/\=/,$sortedList[$nIndex]); |
|
@Dis=split(/\+/,$tmp); |
|
my $Temp = $Problem; |
|
do { |
|
$nIndex++; |
|
$nStudent++; |
|
$Sum1 += $Dis[0]; |
|
$Sum2 += $Dis[1]; |
|
($Problem,$tmp)=split(/\=/,$sortedList[$nIndex]); |
|
@Dis=split(/\+/,$tmp); |
|
} while ( $Problem eq $Temp && $nIndex < $Count ); |
|
# $Proc{$Temp}=($Sum1/$nStudent).':'.$nStudent; |
|
$Proc{$Temp}=($Sum1/$nStudent).':'.($Sum2/$nStudent); |
|
# $r->print("$nIndex) $Temp --> ($nStudent) $Proc{$Temp} <br>"); |
|
$Sum1=0; |
|
$Sum2=0; |
|
$nStudent=0; |
|
} |
|
|
|
return %Proc; |
|
} |
|
|
|
#------- Creating Discimination factor |
|
sub Discriminant { |
|
my ($discriminantFactor)=@_; |
|
my @discriminantKeys=keys(%$discriminantFactor); |
|
my $Count = scalar @discriminantKeys; |
|
|
|
my $UpCnt = int(0.27*$Count); |
|
my $low=0; |
|
my $up=$Count-$UpCnt; |
|
my @UpList=(); |
|
my @LowList=(); |
|
|
|
$Count=0; |
|
foreach my $key (sort(@discriminantKeys)) { |
|
$Count++; |
|
if($low < $UpCnt || $Count > $up) { |
|
$low++; |
|
my $str=$discriminantFactor->{$key}; |
|
foreach(split(/\:/,$str)){ |
|
if($_) { |
|
if($low<$UpCnt) { push(@LowList,$_); } |
|
else { push(@UpList,$_); } |
|
} |
|
} |
|
} |
} |
|
$header_row .= '</th>'; |
} |
} |
my %DisUp = &ProcessDiscriminant(\@UpList); |
return $header_row; |
my %DisLow = &ProcessDiscriminant(\@LowList); |
} |
|
|
return (\%DisUp, \%DisLow); |
sub sequence_html_header { |
|
my $Str .= '<tr>'; |
|
foreach my $field (@SeqFields) { |
|
# next if ($field->{'selected'} ne 'yes'); |
|
$Str .= '<th bgcolor="'.$field->{'color'}.'"'; |
|
$Str .= '>'.$field->{'title'}.'</th>'; |
|
} |
|
$Str .= '</tr>'; |
|
return $Str; |
} |
} |
|
|
|
|
sub NumericSort { |
sub sequence_html_output { |
$a <=> $b; |
my ($seq) = @_; |
|
my $data = $SeqStat{$seq->symb}; |
|
my $row = '<tr>'; |
|
foreach my $field (@SeqFields) { |
|
next if ($field->{'selected'} ne 'yes'); |
|
$row .= '<td bgcolor="'.$field->{'color'}.'"'; |
|
if (exists($field->{'align'})) { |
|
$row .= ' align="'.$field->{'align'}.'"'; |
|
} |
|
$row .= '>'; |
|
if (exists($field->{'format'})) { |
|
$row .= sprintf($field->{'format'},$data->{$field->{'name'}}); |
|
} else { |
|
$row .= $data->{$field->{'name'}}; |
|
} |
|
$row .= '</td>'; |
|
} |
|
$row .= '</tr>'."\n"; |
|
return $row; |
} |
} |
|
|
|
#################################################### |
|
#################################################### |
|
## |
|
## Plotting Routines |
|
## |
|
#################################################### |
|
#################################################### |
|
sub make_plot { |
|
my ($r,$plot) = @_; |
|
&compute_all_statistics($r); |
|
&sort_data($ENV{'form.sortby'}); |
|
if ($plot eq 'degrees') { |
|
°rees_plot($r); |
|
} elsif ($plot eq 'tries statistics') { |
|
&tries_data_plot($r); |
|
} else { |
|
&make_single_stat_plot($r,$plot); |
|
} |
|
return; |
|
} |
|
|
sub CreateProblemStatisticsTableHeading { |
sub make_single_stat_plot { |
my ($displayFormat,$sequenceSource,$sequenceTitle,$headings,$r)=@_; |
my ($r,$datafield) = @_; |
if($displayFormat eq 'Display CSV Format') { |
# |
$r->print('<br>"'.$sequenceTitle.'","'); |
my $title; my $yaxis; |
$r->print($sequenceSource.'"'); |
foreach my $field (@Fields) { |
return; |
next if ($field->{'name'} ne $datafield); |
|
$title = $field->{'long_title'}; |
|
$yaxis = $field->{'title'}; |
|
last; |
|
} |
|
if ($title eq '' || $yaxis eq '') { |
|
# datafield is something we do not know enough about to plot |
|
$r->print('<h3>'. |
|
&mt('Unable to plot the requested statistic.'). |
|
'</h3>'); |
|
return; |
|
} |
|
# |
|
# Build up the data sets to plot |
|
my @Labels; |
|
my @Data; |
|
my $max = 1; |
|
foreach my $data (@StatsArray) { |
|
push(@Labels,$data->{'problem_num'}); |
|
push(@Data,$data->{$datafield}); |
|
if ($data->{$datafield}>$max) { |
|
$max = $data->{$datafield}; |
|
} |
|
} |
|
foreach (1,2,3,4,5,10,15,20,25,40,50,75,100,150,200,250,300,500,600,750, |
|
1000,1500,2000,2500,3000,3500,4000,5000,7500,10000,15000,20000) { |
|
if ($max <= $_) { |
|
$max = $_; |
|
last; |
|
} |
} |
} |
|
if ($max > 20000) { |
|
$max = 10000*(int($max/10000)+1); |
|
} |
|
# |
|
$r->print("<p>".&Apache::loncommon::DrawBarGraph($title, |
|
'Problem Number', |
|
$yaxis, |
|
$max, |
|
undef, # colors |
|
\@Labels, |
|
\@Data)."</p>\n"); |
|
return; |
|
} |
|
|
$r->print('<br><a href="'.$sequenceSource. |
sub degrees_plot { |
'" target="_blank">'.$sequenceTitle.'</a>'); |
my ($r)=@_; |
|
my $count = scalar(@StatsArray); |
|
my $width = 50 + 10*$count; |
|
$width = 300 if ($width < 300); |
|
my $height = 300; |
|
my $plot = ''; |
|
my $ymax = 0; |
|
my $ymin = 0; |
|
my @Disc; my @Diff; my @Labels; |
|
foreach my $data (@StatsArray) { |
|
push(@Labels,$data->{'problem_num'}); |
|
my $disc = $data->{'deg_of_disc'}; |
|
my $diff = $data->{'deg_of_diff'}; |
|
push(@Disc,$disc); |
|
push(@Diff,$diff); |
|
# |
|
$ymin = $disc if ($ymin > $disc); |
|
$ymin = $diff if ($ymin > $diff); |
|
$ymax = $disc if ($ymax < $disc); |
|
$ymax = $diff if ($ymax < $diff); |
|
} |
|
# |
|
# Make sure we show relevant information. |
|
if ($ymin < 0) { |
|
if (abs($ymin) < 0.05) { |
|
$ymin = 0; |
|
} else { |
|
$ymin = -1; |
|
} |
|
} |
|
if ($ymax > 0) { |
|
if (abs($ymax) < 0.05) { |
|
$ymax = 0; |
|
} else { |
|
$ymax = 1; |
|
} |
|
} |
|
# |
|
my $xmax = $Labels[-1]; |
|
if ($xmax > 50) { |
|
if ($xmax % 10 != 0) { |
|
$xmax = 10 * (int($xmax/10)+1); |
|
} |
|
} else { |
|
if ($xmax % 5 != 0) { |
|
$xmax = 5 * (int($xmax/5)+1); |
|
} |
|
} |
|
# |
|
my $discdata .= '<data>'.join(',',@Labels).'</data>'.$/. |
|
'<data>'.join(',',@Disc).'</data>'.$/; |
|
# |
|
my $diffdata .= '<data>'.join(',',@Labels).'</data>'.$/. |
|
'<data>'.join(',',@Diff).'</data>'.$/; |
|
# |
|
my $title = 'Degree of Discrimination\nand Degree of Difficulty'; |
|
if ($xmax > 50) { |
|
$title = 'Degree of Discrimination and Degree of Difficulty'; |
|
} |
|
# |
|
$plot=<<"END"; |
|
<gnuplot |
|
texfont="10" |
|
fgcolor="x000000" |
|
plottype="Cartesian" |
|
font="large" |
|
grid="on" |
|
align="center" |
|
border="on" |
|
transparent="on" |
|
alttag="Degree of Discrimination and Degree of Difficulty Plot" |
|
samples="100" |
|
bgcolor="xffffff" |
|
height="$height" |
|
width="$width"> |
|
<key |
|
pos="top right" |
|
title="" |
|
box="off" /> |
|
<title>$title</title> |
|
<axis xmin="0" ymin="$ymin" xmax="$xmax" ymax="$ymax" color="x000000" /> |
|
<xlabel>Problem Number</xlabel> |
|
<curve |
|
linestyle="linespoints" |
|
name="DoDisc" |
|
pointtype="0" |
|
color="x000000"> |
|
$discdata |
|
</curve> |
|
<curve |
|
linestyle="linespoints" |
|
name="DoDiff" |
|
pointtype="0" |
|
color="xFF0000"> |
|
$diffdata |
|
</curve> |
|
</gnuplot> |
|
END |
|
my $plotresult = |
|
'<p>'.&Apache::lonxml::xmlparse($r,'web',$plot).'</p>'.$/; |
|
$r->print($plotresult); |
|
return; |
|
} |
|
|
my $Result = "\n".'<table border=2><tr><th>P#</th>'."\n"; |
sub tries_data_plot { |
for(my $nIndex=0; $nIndex < (scalar (keys %$headings)); $nIndex++) { |
my ($r)=@_; |
$Result .= '<th>'.'<input type="submit" name="'; |
my $count = scalar(@StatsArray); |
$Result .= 'ProblemStatisticsHeading" value="'; |
my $width = 50 + 10*$count; |
$Result .= $headings->{$nIndex}.'" />'.'</th>'."\n"; |
$width = 300 if ($width < 300); |
|
my $height = 300; |
|
my $plot = ''; |
|
my @STD; my @Mean; my @Max; my @Min; |
|
my @Labels; |
|
my $ymax = 5; |
|
foreach my $data (@StatsArray) { |
|
my $max = $data->{'mean_tries'} + $data->{'std_tries'}; |
|
$ymax = $max if ($ymax < $max); |
|
$ymax = $max if ($ymax < $max); |
|
push(@Labels,$data->{'problem_num'}); |
|
push(@STD,$data->{'std_tries'}); |
|
push(@Mean,$data->{'mean_tries'}); |
|
} |
|
# |
|
# Make sure we show relevant information. |
|
my $xmax = $Labels[-1]; |
|
if ($xmax > 50) { |
|
if ($xmax % 10 != 0) { |
|
$xmax = 10 * (int($xmax/10)+1); |
|
} |
|
} else { |
|
if ($xmax % 5 != 0) { |
|
$xmax = 5 * (int($xmax/5)+1); |
|
} |
} |
} |
$Result .= "\n".'</tr>'."\n"; |
$ymax = int($ymax)+1+2; |
$r->print($Result); |
# |
$r->rflush(); |
my $std_data .= '<data>'.join(',',@Labels).'</data>'.$/. |
|
'<data>'.join(',',@Mean).'</data>'.$/; |
|
# |
|
my $std_error_data .= '<data>'.join(',',@Labels).'</data>'.$/. |
|
'<data>'.join(',',@Mean).'</data>'.$/. |
|
'<data>'.join(',',@STD).'</data>'.$/; |
|
# |
|
my $title = 'Mean and S.D. of Tries'; |
|
if ($xmax > 25) { |
|
$title = 'Mean and Standard Deviation of Tries'; |
|
} |
|
# |
|
$plot=<<"END"; |
|
<gnuplot |
|
texfont="10" |
|
fgcolor="x000000" |
|
plottype="Cartesian" |
|
font="large" |
|
grid="on" |
|
align="center" |
|
border="on" |
|
transparent="on" |
|
alttag="Mean and S.D of Tries Plot" |
|
samples="100" |
|
bgcolor="xffffff" |
|
height="$height" |
|
width="$width"> |
|
<title>$title</title> |
|
<axis xmin="0" ymin="0" xmax="$xmax" ymax="$ymax" color="x000000" /> |
|
<xlabel>Problem Number</xlabel> |
|
<ylabel>Number of Tries</ylabel> |
|
<curve |
|
linestyle="yerrorbars" |
|
name="S.D. Tries" |
|
pointtype="1" |
|
color="x666666"> |
|
$std_error_data |
|
</curve> |
|
<curve |
|
linestyle="points" |
|
name="Mean Tries" |
|
pointtype="1" |
|
color="xCC4444"> |
|
$std_data |
|
</curve> |
|
</gnuplot> |
|
END |
|
my $plotresult = |
|
'<p>'.&Apache::lonxml::xmlparse($r,'web',$plot).'</p>'.$/; |
|
$r->print($plotresult); |
|
return; |
|
} |
|
|
|
sub plot_dropdown { |
|
my $current = ''; |
|
# |
|
if (defined($ENV{'form.plot'})) { |
|
$current = $ENV{'form.plot'}; |
|
} |
|
# |
|
my @Additional_Plots = ( |
|
{ graphable=>'yes', |
|
name => 'degrees', |
|
title => 'Difficulty Indexes' }, |
|
{ graphable=>'yes', |
|
name => 'tries statistics', |
|
title => 'Tries Statistics' }); |
|
# |
|
my $Str= "\n".'<select name="plot" size="1">'; |
|
$Str .= '<option name="none"></option>'."\n"; |
|
$Str .= '<option name="none2">none</option>'."\n"; |
|
foreach my $field (@Additional_Plots,@Fields) { |
|
if (! exists($field->{'graphable'}) || |
|
$field->{'graphable'} ne 'yes') { |
|
next; |
|
} |
|
$Str .= '<option value="'.$field->{'name'}.'"'; |
|
if ($field->{'name'} eq $current) { |
|
$Str .= ' selected '; |
|
} |
|
$Str.= '>'.&mt($field->{'title'}).'</option>'."\n"; |
|
} |
|
$Str .= '</select>'."\n"; |
|
return $Str; |
} |
} |
|
|
sub CloseTable { |
############################################### |
my ($cache,$r)=@_; |
############################################### |
if($cache->{'DisplayFormat'} eq 'Display CSV Format') { |
## |
return; |
## Excel output routines |
} |
## |
$r->print("\n".'</table>'."\n"); |
############################################### |
|
############################################### |
|
sub Excel_output { |
|
my ($r) = @_; |
|
$r->print('<h2>'.&mt('Preparing Excel Spreadsheet').'</h2>'); |
|
## |
|
## Compute the statistics |
|
&compute_all_statistics($r); |
|
my $c = $r->connection; |
|
return if ($c->aborted()); |
|
## |
|
## Create the excel workbook |
|
my $filename = '/prtspool/'. |
|
$ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'. |
|
time.'_'.rand(1000000000).'.xls'; |
|
my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits(); |
|
# |
|
# Create sheet |
|
my $excel_workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename); |
|
# |
|
# Check for errors |
|
if (! defined($excel_workbook)) { |
|
$r->log_error("Error creating excel spreadsheet $filename: $!"); |
|
$r->print(&mt("Problems creating new Excel file. ". |
|
"This error has been logged. ". |
|
"Please alert your LON-CAPA administrator.")); |
|
return 0; |
|
} |
|
# |
|
# The excel spreadsheet stores temporary data in files, then put them |
|
# together. If needed we should be able to disable this (memory only). |
|
# The temporary directory must be specified before calling 'addworksheet'. |
|
# File::Temp is used to determine the temporary directory. |
|
$excel_workbook->set_tempdir($Apache::lonnet::tmpdir); |
|
# |
|
# Add a worksheet |
|
my $sheetname = $ENV{'course.'.$ENV{'request.course.id'}.'.description'}; |
|
if (length($sheetname) > 31) { |
|
$sheetname = substr($sheetname,0,31); |
|
} |
|
my $excel_sheet = $excel_workbook->addworksheet( |
|
&Apache::loncommon::clean_excel_name($sheetname)); |
|
# |
|
my $format = &Apache::loncommon::define_excel_formats($excel_workbook); |
|
## |
|
## Begin creating excel sheet |
|
## |
|
my ($rows_output,$cols_output) = (0,0); |
|
# |
|
# Put the course description in the header |
|
$excel_sheet->write($rows_output,$cols_output++, |
|
$ENV{'course.'.$ENV{'request.course.id'}.'.description'}, |
|
$format->{'h1'}); |
|
$cols_output += 3; |
|
# |
|
# Put a description of the sections listed |
|
my $sectionstring = ''; |
|
$excel_sheet->write($rows_output,$cols_output++, |
|
&Apache::lonstathelpers::sections_description |
|
(@Apache::lonstatistics::SelectedSections), |
|
$format->{'h3'}); |
|
$cols_output += scalar(@Apache::lonstatistics::SelectedSections); |
|
# |
|
# Time restrictions |
|
my $time_string; |
|
if (defined($starttime)) { |
|
# call localtime but not lonlocal:locallocaltime because excel probably |
|
# cannot handle localized text. Probably. |
|
$time_string .= 'Data collected from '.localtime($time_string); |
|
if (defined($endtime)) { |
|
$time_string .= ' to '.localtime($endtime); |
|
} |
|
$time_string .= '.'; |
|
} elsif (defined($endtime)) { |
|
# See note above about lonlocal:locallocaltime |
|
$time_string .= 'Data collected before '.localtime($endtime).'.'; |
|
} |
|
if (defined($time_string)) { |
|
$excel_sheet->write($rows_output,$cols_output++,$time_string); |
|
$cols_output+= 5; |
|
} |
|
# |
|
# Put the date in there too |
|
$excel_sheet->write($rows_output,$cols_output++, |
|
'Compiled on '.localtime(time)); |
|
# |
|
$rows_output++; |
|
$cols_output=0; |
|
## |
|
## Sequence Statistics |
|
## |
|
&write_headers($excel_sheet,$format,\$rows_output,\$cols_output, |
|
\@SeqFields); |
|
foreach my $seq (@sequences) { |
|
my $data = $SeqStat{$seq->symb}; |
|
$cols_output=0; |
|
foreach my $field (@SeqFields) { |
|
next if ($field->{'selected'} ne 'yes'); |
|
my $fieldformat = undef; |
|
if (exists($field->{'excel_format'})) { |
|
$fieldformat = $format->{$field->{'excel_format'}}; |
|
} |
|
$excel_sheet->write($rows_output,$cols_output++, |
|
$data->{$field->{'name'}},$fieldformat); |
|
} |
|
$rows_output++; |
|
$cols_output=0; |
|
} |
|
## |
|
## Resource Statistics |
|
## |
|
$rows_output++; |
|
$cols_output=0; |
|
&write_headers($excel_sheet,$format,\$rows_output,\$cols_output, |
|
\@Fields); |
|
# |
|
foreach my $data (@StatsArray) { |
|
$cols_output=0; |
|
foreach my $field (@Fields) { |
|
next if ($field->{'selected'} ne 'yes'); |
|
next if ($field->{'name'} eq 'problem_num'); |
|
my $fieldformat = undef; |
|
if (exists($field->{'excel_format'})) { |
|
$fieldformat = $format->{$field->{'excel_format'}}; |
|
} |
|
$excel_sheet->write($rows_output,$cols_output++, |
|
$data->{$field->{'name'}},$fieldformat); |
|
} |
|
$rows_output++; |
|
$cols_output=0; |
|
} |
|
# |
|
$excel_workbook->close(); |
|
# |
|
# Tell the user where to get their excel file |
|
$r->print('<br />'. |
|
'<a href="'.$filename.'">'. |
|
&mt('Your Excel Spreadsheet').'</a>'."\n"); |
$r->rflush(); |
$r->rflush(); |
|
return; |
} |
} |
|
|
|
## |
|
## &write_headers |
|
## |
|
sub write_headers { |
|
my ($excel_sheet,$format,$rows_output,$cols_output,$Fields) = @_; |
|
## |
|
## First the long titles |
|
foreach my $field (@{$Fields}) { |
|
next if ($field->{'name'} eq 'problem_num'); |
|
next if ($field->{'selected'} ne 'yes'); |
|
if (exists($field->{'long_title'})) { |
|
$excel_sheet->write($$rows_output,${$cols_output}, |
|
$field->{'long_title'}, |
|
$format->{'bold'}); |
|
} else { |
|
$excel_sheet->write($$rows_output,${$cols_output},''); |
|
} |
|
${$cols_output}+= 1; |
|
} |
|
${$cols_output} =0; |
|
${$rows_output}+=1; |
|
## |
|
## Then the short titles |
|
foreach my $field (@{$Fields}) { |
|
next if ($field->{'selected'} ne 'yes'); |
|
next if ($field->{'name'} eq 'problem_num'); |
|
# Use english for excel as I am not sure how well excel handles |
|
# other character sets.... |
|
$excel_sheet->write($$rows_output,$$cols_output, |
|
$field->{'title'}, |
|
$format->{'bold'}); |
|
$$cols_output+=1; |
|
} |
|
${$cols_output} =0; |
|
${$rows_output}+=1; |
|
return; |
|
} |
|
|
|
################################################## |
|
################################################## |
|
## |
|
## Statistics Gathering and Manipulation Routines |
|
## |
|
################################################## |
|
################################################## |
|
sub compute_statistics_on_sequence { |
|
my ($seq) = @_; |
|
my @Data; |
|
foreach my $res (&Apache::lonstathelpers::get_resources($navmap,$seq)) { |
|
foreach my $part (@{$res->parts}) { |
|
next if ($res->is_survey($part)); |
|
# |
|
# This is where all the work happens |
|
my $data = &get_statistics($seq,$res,$part,scalar(@StatsArray)+1); |
|
push (@Data,$data); |
|
push (@StatsArray,$data); |
|
} |
|
} |
|
return @Data; |
|
} |
|
|
|
sub compute_all_statistics { |
# ------ Dump the Student's DB file and handling the data for statistics table |
my ($r) = @_; |
sub ExtractStudentData { |
if (@StatsArray > 0) { |
my ($cache,$name,$list,$Discuss,$r)=@_; |
# Assume we have already computed the statistics |
my %discriminantFactor; |
return; |
|
} |
my $totalTries = 0; |
my $c = $r->connection; |
my $totalAwarded = 0; |
foreach my $seq (@sequences) { |
my $tempProblemOrder=0; |
last if ($c->aborted); |
my $spent=0; |
&compute_sequence_statistics($seq); |
my $spent_yes=0; |
&compute_statistics_on_sequence($seq); |
my $TotDiscuss=0; |
} |
my $TotalOpend = 0; |
} |
my $ProbSolved = 0; |
|
my $ProbTot = 0; |
|
my $TotFirst = 0; |
|
my $TimeTot = 0; |
|
my $Discussed=0; |
|
|
|
$Apache::lonxml::debug=1; |
|
#&Apache::lonhomework::showhash(%$cache); |
|
$Apache::lonxml::debug=0; |
|
|
|
foreach my $sequence (split(':', $cache->{'orderedSequences'})) { |
|
# if($cache->{'ProblemStatisticsMap'} ne 'All Maps' && |
|
# $cache->{'ProblemStatisticsMap'} ne $cache->{$sequence.':title'}) { |
|
$r->print("<br>$name --- $sequence"); |
|
$r->print("<br>".$cache->{$sequence.':title'}); |
|
# next; |
|
# } |
|
|
|
my $Dis = ''; |
|
foreach my $problemID (split(':', $cache->{$sequence.':problems'})) { |
|
my $problem = $cache->{$problemID.':problem'}; |
|
$r->print("<br>$problemID === $problem"); |
|
my $LatestVersion = $cache->{$name.':version:'.$problem}; |
|
# Output dashes for all the parts of this problem if there |
|
# is no version information about the current problem. |
|
#if(!$LatestVersion) { |
|
# foreach my $part (split(/\:/,$cache->{$sequence.':'. |
|
# $problemID. |
|
# ':parts'})) { |
|
# $codes .= "-,"; |
|
# $attempts .= "0,"; |
|
# } |
|
# next; |
|
#} |
|
|
|
my %partData=undef; |
|
# Initialize part data, display skips correctly |
|
# Skip refers to when a student made no submissions on that |
|
# part/problem. |
|
foreach my $part (split(/\:/,$cache->{$sequence.':'. |
|
$problemID. |
|
':parts'})) { |
|
$partData{$part.':tries'}=0; |
|
$partData{$part.':code'}='-'; |
|
} |
|
|
|
# Looping through all the versions of each part, starting with the |
sub sort_data { |
# oldest version. Basically, it gets the most recent |
my ($sortkey) = @_; |
# set of grade data for each part. |
return if (! @StatsArray); |
for(my $Version=1; $Version<=$LatestVersion; $Version++) { |
# |
foreach my $part (split(/\:/,$cache->{$sequence.':'. |
# Sort the data |
$problemID. |
my $sortby = undef; |
':parts'})) { |
foreach my $field (@Fields) { |
|
if ($sortkey eq $field->{'name'}) { |
if(!defined($cache->{$name.":$Version:$problem". |
$sortby = $field->{'name'}; |
":resource.$part.solved"})) { |
} |
# No grade for this submission, so skip |
} |
next; |
if (! defined($sortby) || $sortby eq '' || $sortby eq 'problem_num') { |
|
$sortby = 'container'; |
|
} |
|
if ($sortby ne 'container') { |
|
# $sortby is already defined, so we can charge ahead |
|
if ($sortby =~ /^(title|part)$/i) { |
|
# Alpha comparison |
|
@StatsArray = sort { |
|
lc($a->{$sortby}) cmp lc($b->{$sortby}) || |
|
lc($a->{'title'}) cmp lc($b->{'title'}) || |
|
lc($a->{'part'}) cmp lc($b->{'part'}); |
|
} @StatsArray; |
|
} else { |
|
# Numerical comparison |
|
@StatsArray = sort { |
|
my $retvalue = 0; |
|
if ($b->{$sortby} eq 'nan') { |
|
if ($a->{$sortby} ne 'nan') { |
|
$retvalue = -1; |
|
} else { |
|
$retvalue = 0; |
} |
} |
|
} |
my $tries=0; |
if ($a->{$sortby} eq 'nan') { |
my $time=0; |
if ($b->{$sortby} ne 'nan') { |
my $awarded=0; |
$retvalue = 1; |
$Discussed=0; |
|
my $code='U'; |
|
|
|
$awarded = $cache->{$name. |
|
"$Version:$problem:resource.". |
|
"$part.awarded"}; |
|
$partData{$part.':awarded'} = ($awarded) ? $awarded : 0; |
|
$totalAwarded += $awarded; |
|
|
|
$tries = $cache->{$name.":$Version:$problem". |
|
":resource.$part.tries"}; |
|
$partData{$part.':tries'} = ($tries) ? $tries : 0; |
|
$partData{$part.':wrong'} = $partData{$part.':tries'}; |
|
$totalTries += $tries; |
|
|
|
my $val = $cache->{$name.":$Version:$problem". |
|
":resource.$part.solved"}; |
|
if ($val eq 'correct_by_student') {$code = 'C';} |
|
elsif ($val eq 'correct_by_override') {$code = 'O';} |
|
elsif ($val eq 'incorrect_attempted') {$code = 'I';} |
|
elsif ($val eq 'incorrect_by_override'){$code = 'I';} |
|
elsif ($val eq 'excused') {$code = 'x';} |
|
$partData{$part.':code'}=$code; |
|
if($partData{$part.':wrong'} ne 0 && |
|
($code eq 'C' || $code eq 'O')) { |
|
$partData{$part.':wrong'}--; |
|
} |
} |
} |
} |
} |
if ($retvalue eq '0') { |
|
$retvalue = $b->{$sortby} <=> $a->{$sortby} || |
# Loop through all the parts for the current problem in the |
lc($a->{'title'}) <=> lc($b->{'title'}) || |
# correct order and prepare the output |
lc($a->{'part'}) <=> lc($b->{'part'}); |
foreach (split(/\:/,$cache->{$sequence.':'.$problemID. |
|
':parts'})) { |
|
my $Yes = 0; |
|
if($partData{$_.':code'} eq 'C' || |
|
$partData{$_.':code'} eq 'O') { |
|
$Yes=1; |
|
} |
} |
my $ptr = $tempProblemOrder.'&'.$problemID; |
$retvalue; |
|
} @StatsArray; |
|
} |
|
} |
|
# |
|
# Renumber the data set |
|
my $count; |
|
foreach my $data (@StatsArray) { |
|
$data->{'problem_num'} = ++$count; |
|
} |
|
return; |
|
} |
|
|
if($_ > 1) { |
######################################################## |
$ptr .= "*(part $_)"; |
######################################################## |
$Dis .= '&'; |
|
} |
|
|
|
my ($pr_no,$dod)=split('&',$ptr); |
=pod |
# my $DoDiff=$DoDiff->{$dod}; |
|
# $r->print('<br>'.$name.'---'.$ptr.'==='.$DoDiff); |
|
|
|
my $Fac = ($partData{$_.':Tries'}) ? |
|
($partData{$_.':awarded'}/$partData{$_.':tries'}) : 0; |
|
my $DisF; |
|
if($Fac > 0 && $Fac < 1) { |
|
$DisF = sprintf( "%.4f", $Fac ); |
|
} else { |
|
$DisF = $Fac; |
|
} |
|
|
|
if ($Discuss->{"$name:$problem"}) { |
=item &get_statistics() |
$TotDiscuss++; |
|
$Discussed=1; |
|
} |
|
my $time = $cache->{"$name:$LatestVersion:$problem:timestamp"}; |
|
$Dis .= $tempProblemOrder.'='.$DisF.'+'.$Yes; |
|
$ptr .= '&'.$partData{$_.'.tries'}. |
|
'&'.$partData{$_.'.wrongs'}. |
|
'&'.$partData{$_.'.code'}; |
|
push (@$list, $ptr."&$Discussed"); |
|
$r->print('<br>'.$name.'---'.$ptr); |
|
|
|
#### if ($DoDiff>0.85) { |
|
|
|
$TimeTot += $time; |
Wrapper routine from the call to loncoursedata::get_problem_statistics. |
|
Calls lonstathelpers::get_time_limits() to limit the data set by time |
|
and &compute_discrimination_factor |
|
|
if ($Yes==1 && $partData{$_.'.Tries'}==1) { |
Inputs: $sequence, $resource, $part, $problem_num |
$TotFirst++; |
|
} |
|
# my $Acts= $Activity->{$name.':'.$problem}; |
|
# if ($Acts) { |
|
# my $Pt=&ProcAct( $Acts, $time ); |
|
#my ($spe,$beg) = split(/\+/,$Pt); |
|
# my $spe= $Pt; |
|
# if ($Yes==1) {$spent_yes += $spe;} |
|
# $spent += $spe; |
|
#$Beg += $beg; |
|
# $r->print('<br>'.$name.'---'.$problem.'---'.$spe); |
|
# } |
|
$TotalOpend++; |
|
$ProbTot++; |
|
|
|
$tempProblemOrder++; |
Returns: Hash reference with statistics data from |
} |
loncoursedata::get_problem_statistics. |
} |
|
my $pstr; |
=cut |
if($totalTries) { |
|
my $DisFac = ($totalAwarded/$totalTries); |
|
my $DisFactor = sprintf( "%.4f", $DisFac ); |
|
my $TS = sprintf( "%.2f", $spent ); |
|
my $TS_yes = sprintf( "%.2f", $spent_yes ); |
|
# $DiscFac{$DisFactor}=$Dis; |
|
$pstr=$DisFactor.':'.$name.':'.$ProbTot.':'.$TotalOpend.':'. |
|
$totalTries.':'.$ProbSolved.':'.$TotFirst.':'. |
|
$TS_yes.':'.$TS.':'.$TotDiscuss; |
|
$discriminantFactor{$pstr}=$Dis; |
|
} |
|
} |
|
|
|
return (\%discriminantFactor); |
######################################################## |
|
######################################################## |
|
sub get_statistics { |
|
my ($sequence,$resource,$part,$problem_num) = @_; |
|
# |
|
my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits(); |
|
my $symb = $resource->symb; |
|
my $courseid = $ENV{'request.course.id'}; |
|
# |
|
my $data = &Apache::loncoursedata::get_problem_statistics |
|
(\@Apache::lonstatistics::SelectedSections, |
|
$Apache::lonstatistics::enrollment_status, |
|
$symb,$part,$courseid,$starttime,$endtime); |
|
$data->{'symb'} = $symb; |
|
$data->{'part'} = $part; |
|
$data->{'problem_num'} = $problem_num; |
|
$data->{'container'} = $sequence->compTitle; |
|
$data->{'title'} = $resource->compTitle; |
|
$data->{'title.link'} = $resource->src.'?symb='. |
|
&Apache::lonnet::escape($resource->symb); |
|
# |
|
if ($SelectedFields{'deg_of_disc'}) { |
|
$data->{'deg_of_disc'} = |
|
&compute_discrimination_factor($resource,$part,$sequence); |
|
} |
|
# |
|
# Store in metadata if computations were done for all students |
|
if ($data->{'num_students'} > 1) { |
|
my @Sections = @Apache::lonstatistics::SelectedSections; |
|
my $sections = '"'.join(' ',@Sections).'"'; |
|
$sections =~ s/&+/_/g; # Ensure no special characters |
|
$data->{'sections'}=$sections; |
|
$data->{'course'} = $ENV{'request.course.id'}; |
|
my $urlres=(&Apache::lonnet::decode_symb($resource->symb))[2]; |
|
$data->{'urlres'}=$urlres; |
|
my %storestats = |
|
&LONCAPA::lonmetadata::dynamic_metadata_storage($data); |
|
my ($dom,$user) = $urlres=~/^(\w+)\/(\w+)/; |
|
&Apache::lonnet::put('nohist_resevaldata',\%storestats,$dom,$user); |
|
} |
|
# |
|
$data->{'tries_per_correct'} = $data->{'tries'} / |
|
($data->{'num_solved'}+0.1); |
|
# |
|
# Get the due date for research purposes (commented out most of the time) |
|
# $data->{'duedate'} = |
|
# &Apache::lonnet::EXT('resource.'.$part.'.duedate',$symb); |
|
# $data->{'opendate'} = |
|
# &Apache::lonnet::EXT('resource.'.$part.'.opendate',$symb); |
|
# $data->{'maxtries'} = |
|
# &Apache::lonnet::EXT('resource.'.$part.'.maxtries',$symb); |
|
# $data->{'hinttries'} = |
|
# &Apache::lonnet::EXT('resource.'.$part.'.hinttries',$symb); |
|
# $data->{'weight'} = |
|
# &Apache::lonnet::EXT('resource.'.$part.'.weight',$symb); |
|
# $data->{'resptypes'} = join(',',@{$resource->{'partdata'}->{$part}->{'ResponseTypes'}}); |
|
return $data; |
} |
} |
|
|
|
############################################### |
|
############################################### |
|
|
=pod |
=pod |
sub MySort { |
|
if ( $Pos > 0 ) { |
=item &compute_discrimination_factor() |
if ($ENV{'form.order'} eq 'Descending') {$b <=> $a;} |
|
else { $a <=> $b; } |
Inputs: $Resource, $Sequence |
} |
|
else { |
Returns: integer between -1 and 1 |
if ($ENV{'form.order'} eq 'Descending') {$b cmp $a;} |
|
else { $a cmp $b; } |
=cut |
|
|
|
############################################### |
|
############################################### |
|
sub compute_discrimination_factor { |
|
my ($resource,$part,$seq) = @_; |
|
my $symb = $resource->symb; |
|
my @Resources; |
|
foreach my $res (&Apache::lonstathelpers::get_resources($navmap,$seq)){ |
|
next if ($res->symb eq $symb); |
|
push (@Resources,$res->symb); |
|
} |
|
# |
|
# rank |
|
my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits(); |
|
my $ranking = |
|
&Apache::loncoursedata::rank_students_by_scores_on_resources |
|
(\@Resources, |
|
\@Apache::lonstatistics::SelectedSections, |
|
$Apache::lonstatistics::enrollment_status,undef, |
|
$starttime,$endtime); |
|
# |
|
# compute their percent scores on the problems in the sequence, |
|
my $number_to_grab = int(scalar(@{$ranking})/4); |
|
my $num_students = scalar(@{$ranking}); |
|
my @BottomSet = map { $_->[&Apache::loncoursedata::RNK_student()]; |
|
} @{$ranking}[0..$number_to_grab]; |
|
my @TopSet = |
|
map { |
|
$_->[&Apache::loncoursedata::RNK_student()]; |
|
} @{$ranking}[($num_students-$number_to_grab)..($num_students-1)]; |
|
if (! @BottomSet || (@BottomSet == 1 && $BottomSet[0] eq '') || |
|
! @TopSet || (@TopSet == 1 && $TopSet[0] eq '')) { |
|
return 'nan'; |
|
} |
|
my ($bottom_sum,$bottom_max) = |
|
&Apache::loncoursedata::get_sum_of_scores($symb,$part,\@BottomSet, |
|
undef,$starttime,$endtime); |
|
my ($top_sum,$top_max) = |
|
&Apache::loncoursedata::get_sum_of_scores($symb,$part,\@TopSet, |
|
undef,$starttime,$endtime); |
|
my $deg_of_disc; |
|
if ($top_max == 0 || $bottom_max==0) { |
|
$deg_of_disc = 'nan'; |
|
} else { |
|
$deg_of_disc = ($top_sum/$top_max) - ($bottom_sum/$bottom_max); |
} |
} |
|
#&Apache::lonnet::logthis(' '.$top_sum.'/'.$top_max. |
|
# ' - '.$bottom_sum.'/'.$bottom_max); |
|
return $deg_of_disc; |
|
} |
|
|
|
############################################### |
|
############################################### |
|
## |
|
## Compute KR-21 |
|
## |
|
## To compute KR-21, you need the following information: |
|
## |
|
## K=the number of items in your test |
|
## M=the mean score on the test |
|
## s=the standard deviation of the scores on your test |
|
## |
|
## then: |
|
## |
|
## KR-21 rk= [K/(K-1)] * [1- (M*(K-M))/(K*s^2))] |
|
## |
|
############################################### |
|
############################################### |
|
sub compute_sequence_statistics { |
|
my ($seq) = @_; |
|
my $symb = $seq->symb; |
|
my @Resources; |
|
my $part_count; |
|
foreach my $res (&Apache::lonstathelpers::get_resources($navmap,$seq)) { |
|
push (@Resources,$res->symb); |
|
$part_count += scalar(@{$res->parts}); |
|
} |
|
my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits(); |
|
# |
|
# First compute statistics based on student scores |
|
my ($smin,$smax,$sMean,$sSTD,$scount,$sMAX) = |
|
&Apache::loncoursedata::score_stats |
|
(\@Apache::lonstatistics::SelectedSections, |
|
$Apache::lonstatistics::enrollment_status, |
|
\@Resources,$starttime,$endtime,undef); |
|
$SeqStat{$symb}->{'title'} = $seq->compTitle; |
|
$SeqStat{$symb}->{'scoremax'} = $smax; |
|
$SeqStat{$symb}->{'scoremin'} = $smin; |
|
$SeqStat{$symb}->{'scoremean'} = $sMean; |
|
$SeqStat{$symb}->{'scorestd'} = $sSTD; |
|
$SeqStat{$symb}->{'scorecount'} = $scount; |
|
$SeqStat{$symb}->{'max_possible'} = $sMAX; |
|
# |
|
# Compute statistics based on the number of correct problems |
|
# 'correct' is taken to mean |
|
my ($cmin,$cmax,$cMean,$cSTD,$ccount)= |
|
&Apache::loncoursedata::count_stats |
|
(\@Apache::lonstatistics::SelectedSections, |
|
$Apache::lonstatistics::enrollment_status, |
|
\@Resources,$starttime,$endtime,undef); |
|
my $K = $part_count; |
|
my $kr_21; |
|
if ($K > 1 && $cSTD > 0) { |
|
$kr_21 = ($K/($K-1)) * (1 - $cMean*($K-$cMean)/($K*$cSTD**2)); |
|
} else { |
|
$kr_21 = 'nan'; |
|
} |
|
$SeqStat{$symb}->{'countmax'} = $cmax; |
|
$SeqStat{$symb}->{'countmin'} = $cmin; |
|
$SeqStat{$symb}->{'countstd'} = $cSTD; |
|
$SeqStat{$symb}->{'countmean'} = $cMean; |
|
$SeqStat{$symb}->{'count'} = $ccount; |
|
$SeqStat{$symb}->{'items'} = $K; |
|
$SeqStat{$symb}->{'KR-21'}=$kr_21; |
|
return; |
} |
} |
=cut |
|
|
|
|
|
sub BuildStatisticsTable { |
|
my ($cache,$discriminantFactor,$list,$headings,$students,$r,%color)=@_; |
|
|
|
#6666666 |
=pod |
# my $file="/home/httpd/perl/tmp/183d.txt"; |
|
# open(OUT, ">$file"); |
|
#6666666 |
|
## &Apache::lonstatistics::Create_PrgWin($r); |
|
##777777 |
|
## my (%Activity) = &LoadActivityLog(); |
|
## $r->print('<script>popwin.document.popremain.remaining.value="'. |
|
## 'Loading Discussion...";</script>'); |
|
## my ($doDiffFile) = &LoadDoDiffFile(); |
|
|
|
my $p_count = 0; |
|
my $nIndex = 0; |
|
my $dummy; |
|
my $p_val; |
|
my $ResId; |
|
my %GraphDat; |
|
my $NoElements = scalar @$list; |
|
|
|
|
|
foreach my $sequence (split(':', $cache->{'orderedSequences'})) { |
|
|
|
&CreateProblemStatisticsTableHeading($cache->{'DisplayFormat'}, |
|
$cache->{$sequence.':source'}, |
|
$cache->{$sequence.':title'}, |
|
$headings,$r); |
|
|
|
foreach my $problemID (split(':', $cache->{$sequence.':problems'})) { |
|
my $problem = $cache->{$problemID.':problem'}; |
|
$r->print("<br>$problem"); |
|
|
|
} |
|
} |
|
} |
|
=pod |
|
##777777 |
|
## $Str .= &Classify($discriminantFactor, $students); |
|
|
|
|
=item ProblemStatisticsLegend |
|
|
my ($Hid,$pr)=split(/\:/,$mapsort{$_}); |
=over 4 |
my @lpr=split(/\&/,$pr); |
|
for (my $i=1; $i<=$#lpr; $i++) { |
|
my %storestats=(); |
|
my ($PrOrd,$Prob,$Tries,$Wrongs,$Code,$Disc)=split(/\&/,$list->[$nIndex]); |
|
my $Temp = $Prob; |
|
my $MxTries = 0; |
|
my $TotalTries = 0; |
|
my $YES = 0; |
|
my $Incorrect = 0; |
|
my $Override = 0; |
|
my $StdNo = 0; |
|
my $DiscNo=0; |
|
my @StdLst; |
|
while ( $PrOrd == $lpr[$i] ) |
|
{ |
|
$nIndex++; |
|
$StdNo++; |
|
$StdLst[ $StdNo ] = $Tries; |
|
$TotalTries += $Tries; |
|
if ( $MxTries < $Tries ) { $MxTries = $Tries; } |
|
if ( $Code eq 'C' ){ $YES++; } |
|
elsif( $Code eq 'I' ) { $Incorrect++; } |
|
elsif( $Code eq 'O' ) { $Override++; } |
|
elsif( $Code eq 'U' ) { $StdNo--; } |
|
($PrOrd,$Prob,$Tries,$Wrongs,$Code,$Disc)=split(/\&/,$list->[$nIndex]); |
|
} |
|
|
|
$p_count++; |
|
my $Dummy; |
|
($ResId,$Dummy)=split(/\*/,$Temp); |
|
|
|
$Temp = '<a href="'.$cache->{'src_'.$ResId}. |
|
'" target="_blank">'.$cache->{'title_'.$ResId}.$Dummy.'</a>'; |
|
|
|
my $res = &Apache::lonnet::declutter($cache->{'src_'.$ResId}); |
|
my $urlres=$res; |
|
|
|
$ResId=~/(\d+)\.(\d+)/; |
|
my $Map = &Apache::lonnet::declutter( $cache->{'map_id_'.$1} ); |
|
$urlres=$Map; |
|
|
|
$res = '<a href="'.$cache->{'src_'.$ResId}.'">'.$res.'</a>'; |
|
#$Map = '<a href="'.$Map.'">'.$res.'</a>'; |
|
|
|
#------------------------ Compute the Average of Tries about one problem |
|
my $Average = ($StdNo) ? $TotalTries/$StdNo : 0; |
|
|
|
$storestats{$ENV{'request.course.id'}.'___'.$urlres.'___timestamp'}=time; |
|
$storestats{$ENV{'request.course.id'}.'___'.$urlres.'___stdno'}=$StdNo; |
|
$storestats{$ENV{'request.course.id'}.'___'.$urlres.'___avetries'}=$Average; |
|
|
|
#-------------------------------- Compute percentage of Wrong tries |
|
my $Wrong = ( $StdNo ) ? 100 * ( $Incorrect / $StdNo ) : 0; |
|
|
|
#-------------------------------- Compute Standard Deviation |
|
my $StdDev = 0; |
|
if ( $StdNo > 1 ) { |
|
for ( my $n = 0; $n < $StdNo; $n++ ) { |
|
my $Dif = $StdLst[ $n ]-$Average; |
|
$StdDev += $Dif*$Dif; |
|
} |
|
$StdDev /= ( $StdNo - 1 ); |
|
$StdDev = sqrt( $StdDev ); |
|
} |
|
|
|
#-------------------------------- Compute Degree of Difficulty |
|
my $DoDiff = 0; |
|
if( $TotalTries > 0 ) { |
|
$DoDiff = 1 - ( ( $YES + $Override ) / $TotalTries ); |
|
# $DoDiff = ($TotalTries)/($YES + $Override+ 0.1); |
|
} |
|
|
|
$storestats{$ENV{'request.course.id'}.'___'.$urlres.'___difficulty'}=$DoDiff; |
|
|
|
#-------------------------------- Compute the Skewness |
|
my $Skewness = 0; |
|
my $Sum = 0; |
|
if ( $StdNo > 0 && $StdDev > 0 ) { |
|
for ( my $n = 0; $n < $StdNo; $n++ ) { |
|
my $Dif = $StdLst[ $n ]-$Average; |
|
$Skewness += $Dif*$Dif*$Dif; |
|
} |
|
$Skewness /= $StdNo; |
|
$Skewness /= $StdDev*$StdDev*$StdDev; |
|
} |
|
|
|
#--------------------- Compute the Discrimination Factors |
|
my ($Up1,$Up2)=split(/\:/,':');#jason$DisUp->{$lpr[$i]}); |
|
my ($Lw1,$Lw2)=split(/\:/,':');#jason$DisLow->{$lpr[$i]}); |
|
my $Dis1 = $Up1 - $Lw1; |
|
my $Dis2 = $Up2 - $Lw2; |
|
my $_D1 = sprintf("%.2f", $Dis1); |
|
my $_D2 = sprintf("%.2f", $Dis2); |
|
|
|
#----------------- Some restition in presenting the float numbers |
|
my $Avg = sprintf( "%.2f", $Average ); |
|
my $Wrng = sprintf( "%.1f", $Wrong ); |
|
my $SD = sprintf( "%.1f", $StdDev ); |
|
my $DoD = sprintf( "%.2f", $DoDiff ); |
|
my $Sk = sprintf( "%.1f", $Skewness ); |
|
my $join = $lpr[$i].'&'.$Temp.'&'.$StdNo.'&'. |
|
$TotalTries.'&'.$MxTries.'&'.$Avg.'&'. |
|
$YES.'&'.$Override.'&'.$Wrng.'&'.$DoD.'&'. |
|
$SD.'&'.$Sk.'&'.$_D1.'&'.$_D2.'&'. |
|
$DiscNo.'&'.$Prob; |
|
##8888 $CachData{($p_count-1)}=$join; |
|
|
|
#6666666 |
|
# $r->print('<br>'.$out.'&'.$DoD); |
|
# print (OUT $out.'@'.$DoD.'&'); |
|
#6666666 |
|
|
|
$urlres=~/^(\w+)\/(\w+)/; |
|
if ($StdNo) { |
|
&Apache::lonnet::put('resevaldata',\%storestats,$1,$2); |
|
} |
|
#-------------------------------- Row of statistical table |
|
&TableRow($cache,$join,$i,($p_count-1),$r,\%color,\%GraphDat); |
|
} |
|
&CloseTable($cache,$r); |
|
} |
|
&Close_PrgWin(); |
|
#666666 |
|
# close( OUT ); |
|
#666666 |
|
} |
|
=cut |
|
|
|
=pod |
=item #Stdnts |
sub Cache_Statistics { |
Total number of students attempted the problem. |
my ($cache,$color)=@_; |
|
my @list = (); |
|
my $Useful; |
|
my $UnUseful; |
|
# $r->print('<input type="hidden" name="show" value="excel" />'."\n"); |
|
my %myHeader = reverse( %Header ); |
|
$Pos = $myHeader{$ENV{'form.sort'}}; |
|
if ($Pos > 0) {$Pos++;} |
|
my $p_count = 0; |
|
foreach my $key( keys %CachData) { |
|
my @Temp=split(/\&/,$CachData{$key}); |
|
if ( $Pos == 0 ) { |
|
($UnUseful,$Useful)=split(/\>/,$Temp[$Pos]); |
|
} |
|
else { |
|
$Useful = $Temp[$Pos]; |
|
} |
|
$list[$p_count]=$Useful.'@'.$CachData{$key}; |
|
$p_count++; |
|
} |
|
|
|
@list = sort MySort (@list); |
|
|
|
my $nIndex=0; |
|
|
|
if ( $Pos == 0 ) { |
|
foreach (sort keys %mapsort) { |
|
my ($Hid,$pr)=split(/\:/,$mapsort{$_}); |
|
&CreateProblemStatisticsTableHeading($cache,1,$Hid); |
|
my @lpr=split(/\&/,$pr); |
|
for (my $i=1; $i<=$#lpr; $i++) { |
|
my($Pre, $Post) = split(/\@/,$list[$nIndex]); |
|
#$r->print('<br>'.$Pre.'---'.$Post); |
|
&TableRow($cache,$Post,$i,$nIndex,\%color,\%GraphDat); |
|
$nIndex++; |
|
} |
|
&CloseTable($cache); |
|
} |
|
} |
|
else { |
|
&CreateProblemStatisticsTableHeading($cache,0); |
|
for ( my $nIndex = 0; $nIndex < $p_count; $nIndex++ ) { |
|
my($Pre, $Post) = split(/\@/,$list[$nIndex]); |
|
&TableRow($cache,$Post,$nIndex,$nIndex,\%color,\%GraphDat); |
|
} |
|
&CloseTable($cache); |
|
} |
|
} |
|
=cut |
|
|
|
sub TableRow { |
|
my ($cache,$Str,$Idx,$RealIdx,$r,$color,$GraphDat)=@_; |
|
my($PrOrd,$Temp,$StdNo,$TotalTries,$MxTries,$Avg,$YES,$Override, |
|
$Wrng,$DoD,$SD,$Sk,$_D1,$_D2,$DiscNo,$Prob)=split(/\&/,$Str); |
|
if ($ENV{'form.showcsv'}) { |
|
my ($ResId,$Dummy)=split(/\*/,$Prob); |
|
my $Ptr = "\n".'<br>'. |
|
"\n".'"'.($RealIdx+1).'",'. |
|
"\n".'"'.$cache->{'title_'.$ResId}.$Dummy.'",'. |
|
"\n".'"'.$cache->{'src_'.$ResId}.'",'. |
|
"\n".'"'.$StdNo.'",'. |
|
"\n".'"'.$TotalTries.'",'. |
|
"\n".'"'.$MxTries.'",'. |
|
"\n".'"'.$Avg.'",'. |
|
"\n".'"'.$YES.'",'. |
|
"\n".'"'.$Override.'",'. |
|
"\n".'"'.$Wrng.'",'. |
|
"\n".'"'.$DoD.'",'. |
|
"\n".'"'.$SD.'",'. |
|
"\n".'"'.$Sk.'",'. |
|
"\n".'"'.$_D1.'",'. |
|
"\n".'"'.$_D2.'"'. |
|
"\n".'"'.$DiscNo.'"'; |
|
|
|
$r->print("\n".$Ptr); |
|
} |
|
else{ |
|
my $Ptr = "\n".'<tr>'. |
|
"\n".'<td>'.($RealIdx+1).'</td>'. |
|
# "\n".'<td>'.$PrOrd.$Temp.'</td>'. |
|
"\n".'<td>'.$Temp.'</td>'. |
|
"\n".'<td bgcolor='.$color->{"yellow"}.'> '.$StdNo.'</td>'. |
|
"\n".'<td bgcolor='.$color->{"yellow"}.'>'.$TotalTries.'</td>'. |
|
"\n".'<td bgcolor='.$color->{"yellow"}.'>'.$MxTries.'</td>'. |
|
"\n".'<td bgcolor='.$color->{"gb"}.'>'.$Avg.'</td>'. |
|
"\n".'<td bgcolor='.$color->{"gb"}.'> '.$YES.'</td>'. |
|
"\n".'<td bgcolor='.$color->{"gb"}.'> '.$Override.'</td>'. |
|
"\n".'<td bgcolor='.$color->{"red"}.'> '.$Wrng.'</td>'. |
|
"\n".'<td bgcolor='.$color->{"red"}.'> '.$DoD.'</td>'. |
|
"\n".'<td bgcolor='.$color->{"green"}.'> '.$SD.'</td>'. |
|
"\n".'<td bgcolor='.$color->{"green"}.'> '.$Sk.'</td>'. |
|
"\n".'<td bgcolor='.$color->{"purple"}.'> '.$_D1.'</td>'. |
|
"\n".'<td bgcolor='.$color->{"purple"}.'> '.$_D2.'</td>'. |
|
"\n".'<td bgcolor='.$color->{"yellow"}.'> '.$DiscNo.'</td>'; |
|
$r->print("\n".$Ptr.'</tr>' ); |
|
} |
|
$GraphDat->{$RealIdx}=$DoD.':'.$Wrng; |
|
} |
|
|
|
sub StatusOptions { |
|
my ($cache)=@_; |
|
|
|
my $Status = $cache->{'Status'}; |
|
my $OpSel1 = ''; |
|
my $OpSel2 = ''; |
|
my $OpSel3 = ''; |
|
|
|
if($Status eq 'Any') { $OpSel3 = ' selected'; } |
|
elsif($Status eq 'Expired' ) { $OpSel2 = ' selected'; } |
|
else { $OpSel1 = ' selected'; } |
|
|
|
my $Ptr = ''; |
|
$Ptr .= '<tr><td align="right"><b>Student Status:</b></td>'."\n"; |
|
$Ptr .= '<td align="left"><select name="Status">'; |
|
$Ptr .= '<option'.$OpSel1.'>Active</option>'."\n"; |
|
$Ptr .= '<option'.$OpSel2.'>Expired</option>'."\n"; |
|
$Ptr .= '<option'.$OpSel3.'>Any</option>'."\n"; |
|
$Ptr .= '</select></td></tr>'."\n"; |
|
|
|
return $Ptr; |
|
} |
|
|
|
sub AscendOrderOptions { |
=item Tries |
my ($order)=@_; |
Total number of tries for solving the problem. |
|
|
my $OpSel1 = ''; |
=item Max Tries |
my $OpSel2 = ''; |
Largest number of tries for solving the problem by a student. |
|
|
if($order eq 'Ascending') { |
=item Mean |
$OpSel1 = ' selected'; |
Average number of tries. [ Tries / #Stdnts ] |
} else { |
|
$OpSel2 = ' selected'; |
|
} |
|
|
|
my $Ptr = ''; |
=item #YES |
$Ptr .= '<tr><td align="right"><b>Sorting Type:</b></td>'."\n"; |
Number of students solved the problem correctly. |
$Ptr .= '<td align="left"><select name="Ascend">'."\n"; |
|
$Ptr .= '<option'.$OpSel1.'>Ascending</option>'."\n". |
|
'<option'.$OpSel2.'>Descending</option>'."\n"; |
|
$Ptr .= '</select></td></tr>'."\n"; |
|
|
|
return $Ptr; |
|
} |
|
|
|
sub ProblemStatisticsButtons { |
|
my ($displayFormat)=@_; |
|
|
|
my $Ptr = '<tr><td></td><td align="left">'; |
|
$Ptr .= '<input type=submit name="ProblemStatisticsRecalculate" '; |
|
$Ptr .= 'value="Recalculate Statistics"/>'."\n"; |
|
$Ptr .= ' '; |
|
$Ptr .= '<input type="submit" name="DoDiffGraph" '; |
|
$Ptr .= 'value="DoDiff Graph" />'."\n"; |
|
$Ptr .= ' '; |
|
$Ptr .= '<input type="submit" name="PercentWrongGraph" '; |
|
$Ptr .= 'value="%Wrong Graph" />'."\n"; |
|
$Ptr .= ' '; |
|
$Ptr .= '<input type="submit" name="DisplayCSVFormat" '; |
|
if($displayFormat eq 'Display CSV Format') { |
|
$Ptr .= 'value="Display CSV Format" />'."\n"; |
|
} else { |
|
$Ptr .= 'value="Display Table Format" />'."\n"; |
|
} |
|
$Ptr .= '</td></tr>'; |
|
|
|
return $Ptr; |
=item #yes |
} |
Number of students solved the problem by override. |
|
|
|
=item %Wrong |
|
Percentage of students who tried to solve the problem |
|
but is still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ] |
|
|
|
=item DoDiff |
|
Degree of Difficulty of the problem. |
|
[ 1 - ((#YES+#yes) / Tries) ] |
|
|
|
=item S.D. |
|
Standard Deviation of the tries. |
|
[ sqrt(sum((Xi - Mean)^2)) / (#Stdnts-1) |
|
where Xi denotes every student\'s tries ] |
|
|
|
=item Skew. |
|
Skewness of the students tries. |
|
[(sqrt( sum((Xi - Mean)^3) / #Stdnts)) / (S.D.^3)] |
|
|
|
=item Dis.F. |
|
Discrimination Factor: A Standard for evaluating the |
|
problem according to a Criterion<br> |
|
|
|
=item [Criterion to group students into %27 Upper Students - |
|
and %27 Lower Students] |
|
1st Criterion for Sorting the Students: |
|
Sum of Partial Credit Awarded / Total Number of Tries |
|
2nd Criterion for Sorting the Students: |
|
Total number of Correct Answers / Total Number of Tries |
|
|
|
=item Disc. |
|
Number of Students had at least one discussion. |
|
|
|
=back |
|
|
|
=cut |
|
|
|
############################################################ |
|
############################################################ |
|
|
sub ProblemStatisticsLegend { |
|
my $Ptr = ''; |
|
$Ptr = '<table border="0">'; |
|
$Ptr .= '<tr><td>'; |
|
$Ptr .= '<b>#Stdnts</b>:</td>'; |
|
$Ptr .= '<td>Total Number of Students opened the problem.'; |
|
$Ptr .= '</td></tr><tr><td>'; |
|
$Ptr .= '<b>Tries</b>:</td>'; |
|
$Ptr .= '<td>Total Number of Tries for solving the problem.'; |
|
$Ptr .= '</td></tr><tr><td>'; |
|
$Ptr .= '<b>Mod</b>:</td>'; |
|
$Ptr .= '<td>Maximunm Number of Tries for solving the problem.'; |
|
$Ptr .= '</td></tr><tr><td>'; |
|
$Ptr .= '<b>Mean</b>:</td>'; |
|
$Ptr .= '<td>Average Number of the tries. [ Tries / #Stdnts ]'; |
|
$Ptr .= '</td></tr><tr><td>'; |
|
$Ptr .= '<b>#YES</b>:</td>'; |
|
$Ptr .= '<td>Number of students solved the problem correctly.'; |
|
$Ptr .= '</td></tr><tr><td>'; |
|
$Ptr .= '<b>#yes</b>:</td>'; |
|
$Ptr .= '<td>Number of students solved the problem by override.'; |
|
$Ptr .= '</td></tr><tr><td>'; |
|
$Ptr .= '<b>%Wrng</b>:</td>'; |
|
$Ptr .= '<td>Percentage of students tried to solve the problem '; |
|
$Ptr .= 'but still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ]'; |
|
$Ptr .= '</td></tr><tr><td>'; |
|
$Ptr .= '<b>DoDiff</b>:</td>'; |
|
$Ptr .= '<td>Degree of Difficulty of the problem. '; |
|
$Ptr .= '[ 1 - ((#YES+#yes) / Tries) ]'; |
|
$Ptr .= '</td></tr><tr><td>'; |
|
$Ptr .= '<b>S.D.</b>:</td>'; |
|
$Ptr .= '<td>Standard Deviation of the tries. '; |
|
$Ptr .= '[ sqrt(sum((Xi - Mean)^2)) / (#Stdnts-1) '; |
|
$Ptr .= 'where Xi denotes every student\'s tries ]'; |
|
$Ptr .= '</td></tr><tr><td>'; |
|
$Ptr .= '<b>Skew.</b>:</td>'; |
|
$Ptr .= '<td>Skewness of the students tries.'; |
|
$Ptr .= '[(sqrt( sum((Xi - Mean)^3) / #Stdnts)) / (S.D.^3)]'; |
|
$Ptr .= '</td></tr><tr><td>'; |
|
$Ptr .= '<b>Dis.F.</b>:</td>'; |
|
$Ptr .= '<td>Discrimination Factor: A Standard for evaluating the '; |
|
$Ptr .= 'problem according to a Criterion<br>'; |
|
$Ptr .= '<b>[Applied Criterion in %27 Upper Students - '; |
|
$Ptr .= 'Applied the same Criterion in %27 Lower Students]</b><br>'; |
|
$Ptr .= '<b>1st Criterion</b> for Sorting the Students: '; |
|
$Ptr .= '<b>Sum of Partial Credit Awarded / Total Number of Tries</b><br>'; |
|
$Ptr .= '<b>2nd Criterion</b> for Sorting the Students: '; |
|
$Ptr .= '<b>Total number of Correct Answers / Total Number of Tries</b>'; |
|
$Ptr .= '</td></tr>'; |
|
$Ptr .= '<tr><td><b>Disc.</b></td>'; |
|
$Ptr .= '<td>Number of Students had at least one discussion.'; |
|
$Ptr .= '</td></tr></table>'; |
|
|
|
return $Ptr; |
|
} |
|
|
|
#---- END Problem Statistics Web Page ---------------------------------------- |
|
|
|
#---- Problem Statistics Graph Web Page -------------------------------------- |
|
|
|
# ------------------------------------------- Prepare data for Graphical chart |
|
|
|
sub GetGraphData { |
|
my ($ylab,$r,%GraphDat)=@_; |
|
my $Col; |
|
my $data=''; |
|
my $count = 0; |
|
my $Max = 0; |
|
my $cid=$ENV{'request.course.id'}; |
|
my $GraphDB = "/home/httpd/perl/tmp/$ENV{'user.name'}". |
|
"_$ENV{'user.domain'}_$cid\_graph.db"; |
|
foreach (keys %GraphDat) {delete $GraphDat{$_};} |
|
if (-e "$GraphDB") { |
|
if (tie(%GraphDat,'GDBM_File',"$GraphDB",&GDBM_READER,0640)) { |
|
if ( $ylab eq 'DoDiff Graph' ) { |
|
$ylab = 'Degree-of-Difficulty'; |
|
$Col = 0; |
|
} |
|
else { |
|
$ylab = 'Wrong-Percentage'; |
|
$Col = 1; |
|
} |
|
foreach (sort NumericSort keys %GraphDat) { |
|
my @Temp=split(/\:/,$GraphDat{$_}); |
|
my $inf = $Temp[$Col]; |
|
if ( $Max < $inf ) {$Max = $inf;} |
|
$data .= $inf.','; |
|
$count++; |
|
} |
|
if ( $Max > 1 ) { |
|
$Max += (10 - $Max % 10); |
|
$Max = int($Max); |
|
} |
|
else { $Max = 1; } |
|
untie(%GraphDat); |
|
my $Course = $ENV{'course.'.$cid.'.description'}; |
|
$Course =~ s/\ /"_"/eg; |
|
my $GData=$Course.'&'.'Problems'.'&'.$ylab.'&'. |
|
$Max.'&'.$count.'&'.$data; |
|
} |
|
else { |
|
$r->print("Unable to tie hash to db file"); |
|
} |
|
} |
|
} |
|
1; |
1; |
__END__ |
__END__ |