Annotation of loncom/interface/statistics/lonproblemstatistics.pm, revision 1.8
1.1 stredwic 1: # The LearningOnline Network with CAPA
2: # (Publication Handler
3: #
1.8 ! minaeibi 4: # $Id: lonproblemstatistics.pm,v 1.7 2002/07/30 22:09:01 minaeibi Exp $
1.1 stredwic 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # (Navigate problems for statistical reports
29: # YEAR=2001
30: # 5/5,7/9,7/25/1,8/11,9/13,9/26,10/5,10/9,10/22,10/26 Behrouz Minaei
31: # 11/1,11/4,11/16,12/14,12/16,12/18,12/20,12/31 Behrouz Minaei
32: # YEAR=2002
33: # 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
1.6 minaeibi 34: # 5/12,5/14,5/15,5/19,5/26,7/16,7/25,7/29 Behrouz Minaei
1.1 stredwic 35: #
36: ###
37:
38: package Apache::lonproblemstatistics;
39:
40: use strict;
41: use Apache::lonnet();
42: use Apache::lonhtmlcommon;
43: use Apache::loncoursedata;
44: use GDBM_File;
45:
46:
47: sub BuildProblemStatisticsPage {
1.5 minaeibi 48: my ($cacheDB, $students, $courseID, $c, $r)=@_;
1.1 stredwic 49: my %cache;
1.2 minaeibi 50: #my %DoDiff;
1.1 stredwic 51: unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER,0640)) {
52: return '<html><body>Unable to tie database.</body></html>';
53: }
54:
55: my $Ptr = '';
56: $Ptr .= '<table border="0"><tbody>';
57: $Ptr .= '<tr><td align="right"><b>Select Map</b></td>'."\n";
58: $Ptr .= '<td align="left">';
59: $Ptr .= &Apache::lonhtmlcommon::MapOptions(\%cache, 'ProblemStatistics');
60: $Ptr .= '</td></tr>'."\n";
61: $Ptr .= &AscendOrderOptions($cache{'Ascend'});
62: $Ptr .= &ProblemStatisticsButtons($cache{'DisplayFormat'});
1.2 minaeibi 63: $Ptr .= '</table>';
1.1 stredwic 64: $Ptr .= &ProblemStatisticsLegend();
1.5 minaeibi 65: $r->print($Ptr);
1.1 stredwic 66:
67: untie(%cache);
68: foreach (@$students) {
69: my $courseData =
70: &Apache::loncoursedata::DownloadCourseInformation($_, $courseID);
71: last if ($c->aborted());
72: if(tie(%cache,'GDBM_File',$cacheDB,&GDBM_WRCREAT,0640)) {
73: &Apache::loncoursedata::ProcessStudentData(\%cache,
74: $courseData, $_);
75: untie(%cache);
76: }
77: }
1.5 minaeibi 78: if($c->aborted()) { return; }
1.1 stredwic 79:
80: unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER,0640)) {
81: return '<html><body>Unable to tie database.</body></html>';
82: }
1.6 minaeibi 83: my %discriminant=();
1.1 stredwic 84: my @list=();
1.2 minaeibi 85: my %Discuss=&Apache::loncoursedata::LoadDiscussion($courseID);
86: my $index=0;
1.1 stredwic 87: foreach (@$students) {
1.3 minaeibi 88: $index++;
1.2 minaeibi 89: #&Apache::lonstatistics::Update_PrgWin(++$index,$r);
1.6 minaeibi 90: &ExtractStudentData(\%cache, $_, \@list,\%Discuss, $r, \%discriminant);
1.1 stredwic 91: }
1.2 minaeibi 92: #&Apache::lonstatistics::Close_PrgWin($r);
1.5 minaeibi 93:
1.7 minaeibi 94: my ($upper, $lower) = &Discriminant(\%discriminant,$r);
1.1 stredwic 95: my %Header = (0,"Homework Sets Order",1,"#Stdnts",2,"Tries",3,"Mod",
96: 4,"Mean",5,"#YES",6,"#yes",7,"%Wrng",8,"DoDiff",
97: 9,"S.D.",10,"Skew.",11,"D.F.1st",12,"D.F.2nd", 13, "Disc.");
1.5 minaeibi 98: my $color=&setbgcolor(0);
1.7 minaeibi 99: my %GraphDat= &BuildStatisticsTable(\%cache, $upper, $lower, \@list,
1.5 minaeibi 100: \%Header, $students, $r, $color);
1.1 stredwic 101: untie(%cache);
102: }
103:
104:
105: #---- Problem Statistics Web Page ---------------------------------------
106:
107:
108: sub NumericSort {
109: $a <=> $b;
110: }
111:
112:
113: sub CreateProblemStatisticsTableHeading {
1.2 minaeibi 114: my ($displayFormat,$sequenceSource,$sequenceTitle,$headings,$r)=@_;
1.1 stredwic 115: if($displayFormat eq 'Display CSV Format') {
116: $r->print('<br>"'.$sequenceTitle.'","');
117: $r->print($sequenceSource.'"');
118: return;
119: }
120:
121: $r->print('<br><a href="'.$sequenceSource.
122: '" target="_blank">'.$sequenceTitle.'</a>');
123:
124: my $Result = "\n".'<table border=2><tr><th>P#</th>'."\n";
125: for(my $nIndex=0; $nIndex < (scalar (keys %$headings)); $nIndex++) {
126: $Result .= '<th>'.'<input type="submit" name="';
127: $Result .= 'ProblemStatisticsHeading" value="';
128: $Result .= $headings->{$nIndex}.'" />'.'</th>'."\n";
129: }
130: $Result .= "\n".'</tr>'."\n";
131: $r->print($Result);
132: $r->rflush();
133: }
134:
135: sub CloseTable {
1.2 minaeibi 136: my ($cache,$r)=@_;
1.1 stredwic 137: if($cache->{'DisplayFormat'} eq 'Display CSV Format') {
138: return;
139: }
140: $r->print("\n".'</table>'."\n");
141: $r->rflush();
142: }
143:
144:
145:
146: # ------ Dump the Student's DB file and handling the data for statistics table
147: sub ExtractStudentData {
1.6 minaeibi 148: my ($cache,$name,$list,$Discuss,$r,$discriminant)=@_;
1.1 stredwic 149: my $totalTries = 0;
150: my $totalAwarded = 0;
151: my $spent=0;
152: my $spent_yes=0;
153: my $TotDiscuss=0;
154: my $TotalOpend = 0;
155: my $ProbSolved = 0;
156: my $ProbTot = 0;
157: my $TotFirst = 0;
158: my $TimeTot = 0;
159: my $Discussed=0;
1.7 minaeibi 160: my $discrim='';
1.5 minaeibi 161: my $tempSequenceOrder=100;
1.1 stredwic 162:
1.5 minaeibi 163: #$Apache::lonxml::debug=1;
1.3 minaeibi 164: #&Apache::lonhomework::showhash(%$cache);
1.5 minaeibi 165: #$Apache::lonxml::debug=0;
1.3 minaeibi 166:
1.1 stredwic 167: foreach my $sequence (split(':', $cache->{'orderedSequences'})) {
1.5 minaeibi 168: my $tempProblemOrder=100;
169: $tempSequenceOrder++;
1.3 minaeibi 170: # if($cache->{'ProblemStatisticsMap'} ne 'All Maps' &&
171: # $cache->{'ProblemStatisticsMap'} ne $cache->{$sequence.':title'}) {
1.5 minaeibi 172: # $r->print("<br>sequences=$cache->{'orderedSequences'}");
1.4 minaeibi 173: # $r->print("<br>".$cache->{$sequence.':title'});
1.3 minaeibi 174: # next;
175: # }
1.1 stredwic 176:
1.7 minaeibi 177: #$discrim .= '&';
1.1 stredwic 178: foreach my $problemID (split(':', $cache->{$sequence.':problems'})) {
1.5 minaeibi 179: # $r->print("<br>problems=$cache->{$sequence.':problems'}");
1.1 stredwic 180: my $problem = $cache->{$problemID.':problem'};
1.5 minaeibi 181: # $r->print("<br>$problemID === $problem");
1.1 stredwic 182: my $LatestVersion = $cache->{$name.':version:'.$problem};
1.3 minaeibi 183: # Output dashes for all the parts of this problem if there
1.1 stredwic 184: # is no version information about the current problem.
185: #if(!$LatestVersion) {
186: # foreach my $part (split(/\:/,$cache->{$sequence.':'.
187: # $problemID.
188: # ':parts'})) {
189: # $codes .= "-,";
190: # $attempts .= "0,";
191: # }
192: # next;
193: #}
194:
195: my %partData=undef;
1.7 minaeibi 196: $partData{'count'}=0;
1.1 stredwic 197: # Initialize part data, display skips correctly
198: # Skip refers to when a student made no submissions on that
199: # part/problem.
200: foreach my $part (split(/\:/,$cache->{$sequence.':'.
201: $problemID.
202: ':parts'})) {
1.5 minaeibi 203: $tempProblemOrder++;
1.7 minaeibi 204: $partData{'count'}++;
1.5 minaeibi 205: # $r->print("<br>parts=$cache->{$sequence.':'.$problemID.':parts'}");
206: $partData{$part.':order'}=$tempProblemOrder;
1.1 stredwic 207: $partData{$part.':tries'}=0;
208: $partData{$part.':code'}='-';
209: }
210:
211: # Looping through all the versions of each part, starting with the
212: # oldest version. Basically, it gets the most recent
213: # set of grade data for each part.
214: for(my $Version=1; $Version<=$LatestVersion; $Version++) {
1.3 minaeibi 215: foreach my $part (split(/\:/,$cache->{$sequence.':'.
1.1 stredwic 216: $problemID.
217: ':parts'})) {
218:
219: if(!defined($cache->{$name.":$Version:$problem".
220: ":resource.$part.solved"})) {
221: # No grade for this submission, so skip
222: next;
223: }
224:
225: my $tries=0;
226: my $time=0;
227: my $awarded=0;
228: $Discussed=0;
1.5 minaeibi 229: my $code='-';
1.1 stredwic 230:
1.7 minaeibi 231: $awarded = $cache->{"$name:$Version:$problem:resource.".
1.1 stredwic 232: "$part.awarded"};
233: $partData{$part.':awarded'} = ($awarded) ? $awarded : 0;
234: $totalAwarded += $awarded;
235:
1.7 minaeibi 236: $tries = $cache->{"$name:$Version:$problem".
1.1 stredwic 237: ":resource.$part.tries"};
238: $partData{$part.':tries'} = ($tries) ? $tries : 0;
239: $partData{$part.':wrong'} = $partData{$part.':tries'};
240: $totalTries += $tries;
241:
242: my $val = $cache->{$name.":$Version:$problem".
243: ":resource.$part.solved"};
244: if ($val eq 'correct_by_student') {$code = 'C';}
245: elsif ($val eq 'correct_by_override') {$code = 'O';}
246: elsif ($val eq 'incorrect_attempted') {$code = 'I';}
247: elsif ($val eq 'incorrect_by_override'){$code = 'I';}
248: elsif ($val eq 'excused') {$code = 'x';}
249: $partData{$part.':code'}=$code;
250: if($partData{$part.':wrong'} ne 0 &&
251: ($code eq 'C' || $code eq 'O')) {
252: $partData{$part.':wrong'}--;
253: }
254: }
255: }
256:
1.5 minaeibi 257: #$Apache::lonxml::debug=1;
258: #&Apache::lonhomework::showhash(%partData);
259: #$Apache::lonxml::debug=0;
260:
1.1 stredwic 261: # Loop through all the parts for the current problem in the
262: # correct order and prepare the output
1.7 minaeibi 263: my $partCounter=0;
1.1 stredwic 264: foreach (split(/\:/,$cache->{$sequence.':'.$problemID.
265: ':parts'})) {
1.7 minaeibi 266: $partCounter++;
1.1 stredwic 267: my $Yes = 0;
268: if($partData{$_.':code'} eq 'C' ||
269: $partData{$_.':code'} eq 'O') {
270: $Yes=1;
271: }
1.5 minaeibi 272: my $pOrder=$partData{$_.':order'};
273: my $ptr = $tempSequenceOrder.':'.$pOrder.':'.$problemID;
1.1 stredwic 274:
1.7 minaeibi 275: if($partData{'count'} > 1) {
1.1 stredwic 276: $ptr .= "*(part $_)";
277: }
1.7 minaeibi 278: #if($partCounter > 1) {
279: $discrim .= '&';
280: #}
1.1 stredwic 281:
282: my ($pr_no,$dod)=split('&',$ptr);
283: # my $DoDiff=$DoDiff->{$dod};
284: # $r->print('<br>'.$name.'---'.$ptr.'==='.$DoDiff);
285:
1.5 minaeibi 286: my $Fac = ($partData{$_.':tries'}) ?
1.1 stredwic 287: ($partData{$_.':awarded'}/$partData{$_.':tries'}) : 0;
288: my $DisF;
289: if($Fac > 0 && $Fac < 1) {
290: $DisF = sprintf( "%.4f", $Fac );
291: } else {
292: $DisF = $Fac;
293: }
294:
1.3 minaeibi 295: if ($Discuss->{"$name:$problem"}) {
1.1 stredwic 296: $TotDiscuss++;
297: $Discussed=1;
298: }
299: my $time = $cache->{"$name:$LatestVersion:$problem:timestamp"};
1.7 minaeibi 300: $discrim .= $tempSequenceOrder.'@'.$pOrder.'='.$DisF.'+'.$Yes;
1.5 minaeibi 301: $ptr .= '&'.$partData{$_.':tries'}.
302: '&'.$partData{$_.':wrong'}.
303: '&'.$partData{$_.':code'};
1.1 stredwic 304: push (@$list, $ptr."&$Discussed");
1.5 minaeibi 305: # $r->print('<br>'.$_.$name.'---'.$ptr);
1.3 minaeibi 306:
1.1 stredwic 307: #### if ($DoDiff>0.85) {
308:
309: $TimeTot += $time;
310:
1.5 minaeibi 311: if ($Yes==1 && $partData{$_.':tries'}==1) {
1.1 stredwic 312: $TotFirst++;
313: }
314: # my $Acts= $Activity->{$name.':'.$problem};
315: # if ($Acts) {
316: # my $Pt=&ProcAct( $Acts, $time );
317: #my ($spe,$beg) = split(/\+/,$Pt);
318: # my $spe= $Pt;
319: # if ($Yes==1) {$spent_yes += $spe;}
320: # $spent += $spe;
321: #$Beg += $beg;
322: # $r->print('<br>'.$name.'---'.$problem.'---'.$spe);
323: # }
324: $TotalOpend++;
325: $ProbTot++;
326:
327: $tempProblemOrder++;
328: }
329: }
1.7 minaeibi 330: }
331: my $pstr;
332: if($totalTries) {
333: my $DisFac = ($totalAwarded/$totalTries);
334: my $DisFactor = sprintf( "%.4f", $DisFac );
335: my $TS = sprintf( "%.2f", $spent );
336: my $TS_yes = sprintf( "%.2f", $spent_yes );
337: $pstr=$DisFactor.':'.$name.':'.$ProbTot.':'.$TotalOpend.':'.
338: $totalTries.':'.$ProbSolved.':'.$TotFirst.':'.
339: $TS_yes.':'.$TS.':'.$TotDiscuss;
340: (%$discriminant)->{$pstr}=$discrim;
1.1 stredwic 341: }
342: }
343:
344:
345: =pod
346: sub MySort {
347: if ( $Pos > 0 ) {
348: if ($ENV{'form.order'} eq 'Descending') {$b <=> $a;}
349: else { $a <=> $b; }
350: }
351: else {
352: if ($ENV{'form.order'} eq 'Descending') {$b cmp $a;}
353: else { $a cmp $b; }
354: }
355: }
356: =cut
357:
1.3 minaeibi 358:
1.1 stredwic 359: sub BuildStatisticsTable {
1.7 minaeibi 360: my ($cache,$upper,$lower,$list,$headings,$students,$r,$color)=@_;
1.5 minaeibi 361: my $NoElements = scalar @$list;
362: my @List=sort(@$list);
363:
1.1 stredwic 364: #6666666
365: # my $file="/home/httpd/perl/tmp/183d.txt";
366: # open(OUT, ">$file");
367: #6666666
1.2 minaeibi 368: ## &Apache::lonstatistics::Create_PrgWin($r);
1.1 stredwic 369: ##777777
370: ## my (%Activity) = &LoadActivityLog();
371: ## $r->print('<script>popwin.document.popremain.remaining.value="'.
372: ## 'Loading Discussion...";</script>');
373: ## my ($doDiffFile) = &LoadDoDiffFile();
374:
1.5 minaeibi 375: ##777777
376: ## $Str .= &Classify($discriminantFactor, $students);
377:
1.1 stredwic 378: my $p_count = 0;
379: my $dummy;
380: my $p_val;
381: my $ResId;
1.2 minaeibi 382: my %GraphDat;
1.5 minaeibi 383: my $cIdx=0;
1.3 minaeibi 384:
1.1 stredwic 385: foreach my $sequence (split(':', $cache->{'orderedSequences'})) {
386:
1.5 minaeibi 387: &CreateProblemStatisticsTableHeading(1,$cache->{$sequence.':source'},
388: $cache->{$sequence.':title'},
1.2 minaeibi 389: $headings,$r);
1.5 minaeibi 390: my ($tar,$Tries,$Wrongs,$Code,$Disc)=split(/\&/,
391: $List[$cIdx]);
392: my ($SqOrd,$PrOrd,$Prob)=split(/\:/,$tar);
393: $sequence+=100;
394: while ($SqOrd==$sequence && $cIdx<$NoElements) {
1.1 stredwic 395: my %storestats=();
1.5 minaeibi 396: my $pOrd=$PrOrd;
1.1 stredwic 397: my $Temp = $Prob;
398: my $MxTries = 0;
399: my $TotalTries = 0;
400: my $YES = 0;
401: my $Incorrect = 0;
402: my $Override = 0;
403: my $StdNo = 0;
404: my $DiscNo=0;
405: my @StdLst;
1.5 minaeibi 406: while ($pOrd==$PrOrd && $cIdx<$NoElements)
1.1 stredwic 407: {
1.5 minaeibi 408: $cIdx++;
1.1 stredwic 409: $StdNo++;
410: $StdLst[ $StdNo ] = $Tries;
411: $TotalTries += $Tries;
412: if ( $MxTries < $Tries ) { $MxTries = $Tries; }
413: if ( $Code eq 'C' ){ $YES++; }
414: elsif( $Code eq 'I' ) { $Incorrect++; }
415: elsif( $Code eq 'O' ) { $Override++; }
1.5 minaeibi 416: elsif( $Code eq '-' ) { $StdNo--; }
417: ($tar,$Tries,$Wrongs,$Code,$Disc)=split(/\&/,
418: $List[$cIdx]);
419: ($SqOrd,$PrOrd,$Prob)=split(/\:/,$tar);
420: }
421:
1.1 stredwic 422: $p_count++;
423: my $Dummy;
424: ($ResId,$Dummy)=split(/\*/,$Temp);
425:
1.5 minaeibi 426: ######################
427: $Temp = '<a href="'.$cache->{$ResId.':source'}.
428: '" target="_blank">'.$cache->{$ResId.':title'}.$Dummy.'</a>';
1.1 stredwic 429:
1.8 ! minaeibi 430: #$r->print('<br>rid='.$ResId);
! 431: #$r->print('<br>src='.$cache->{$ResId.':source'});
! 432: #$r->print('<br>tit='.$cache->{$ResId.':title'});
! 433:
! 434: my $res = &Apache::lonnet::declutter($cache->{$ResId.':source'});
1.1 stredwic 435: my $urlres=$res;
436:
437: $ResId=~/(\d+)\.(\d+)/;
1.2 minaeibi 438: my $Map = &Apache::lonnet::declutter( $cache->{'map_id_'.$1} );
1.1 stredwic 439: $urlres=$Map;
1.5 minaeibi 440: #######################
441:
442: # $res = '<a href="'.$cache->{'src_'.$ResId}.'">'.$res.'</a>';
1.1 stredwic 443: #$Map = '<a href="'.$Map.'">'.$res.'</a>';
444:
445: #------------------------ Compute the Average of Tries about one problem
446: my $Average = ($StdNo) ? $TotalTries/$StdNo : 0;
447:
1.5 minaeibi 448: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___timestamp'}=time;
1.1 stredwic 449: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___stdno'}=$StdNo;
450: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___avetries'}=$Average;
451:
452: #-------------------------------- Compute percentage of Wrong tries
453: my $Wrong = ( $StdNo ) ? 100 * ( $Incorrect / $StdNo ) : 0;
454:
455: #-------------------------------- Compute Standard Deviation
456: my $StdDev = 0;
457: if ( $StdNo > 1 ) {
458: for ( my $n = 0; $n < $StdNo; $n++ ) {
459: my $Dif = $StdLst[ $n ]-$Average;
460: $StdDev += $Dif*$Dif;
461: }
462: $StdDev /= ( $StdNo - 1 );
463: $StdDev = sqrt( $StdDev );
464: }
465:
466: #-------------------------------- Compute Degree of Difficulty
467: my $DoDiff = 0;
468: if( $TotalTries > 0 ) {
469: $DoDiff = 1 - ( ( $YES + $Override ) / $TotalTries );
470: # $DoDiff = ($TotalTries)/($YES + $Override+ 0.1);
471: }
472:
473: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___difficulty'}=$DoDiff;
474:
475: #-------------------------------- Compute the Skewness
476: my $Skewness = 0;
477: my $Sum = 0;
478: if ( $StdNo > 0 && $StdDev > 0 ) {
479: for ( my $n = 0; $n < $StdNo; $n++ ) {
480: my $Dif = $StdLst[ $n ]-$Average;
481: $Skewness += $Dif*$Dif*$Dif;
482: }
483: $Skewness /= $StdNo;
484: $Skewness /= $StdDev*$StdDev*$StdDev;
485: }
486:
487: #--------------------- Compute the Discrimination Factors
1.7 minaeibi 488: my ($Up1,$Up2)=split(/\:/,$upper->{$sequence.'@'.$pOrd});
489: my ($Lw1,$Lw2)=split(/\:/,$lower->{$sequence.'@'.$pOrd});
490:
1.1 stredwic 491: my $Dis1 = $Up1 - $Lw1;
492: my $Dis2 = $Up2 - $Lw2;
493: my $_D1 = sprintf("%.2f", $Dis1);
494: my $_D2 = sprintf("%.2f", $Dis2);
495:
496: #----------------- Some restition in presenting the float numbers
497: my $Avg = sprintf( "%.2f", $Average );
498: my $Wrng = sprintf( "%.1f", $Wrong );
499: my $SD = sprintf( "%.1f", $StdDev );
500: my $DoD = sprintf( "%.2f", $DoDiff );
501: my $Sk = sprintf( "%.1f", $Skewness );
1.5 minaeibi 502: my $join = $Prob.'&'.$Temp.'&'.$StdNo.'&'.
1.1 stredwic 503: $TotalTries.'&'.$MxTries.'&'.$Avg.'&'.
504: $YES.'&'.$Override.'&'.$Wrng.'&'.$DoD.'&'.
505: $SD.'&'.$Sk.'&'.$_D1.'&'.$_D2.'&'.
506: $DiscNo.'&'.$Prob;
1.2 minaeibi 507: ##8888 $CachData{($p_count-1)}=$join;
1.1 stredwic 508:
509: #6666666
510: # $r->print('<br>'.$out.'&'.$DoD);
511: # print (OUT $out.'@'.$DoD.'&');
512: #6666666
513:
514: $urlres=~/^(\w+)\/(\w+)/;
515: if ($StdNo) {
516: &Apache::lonnet::put('resevaldata',\%storestats,$1,$2);
517: }
518: #-------------------------------- Row of statistical table
1.5 minaeibi 519: &TableRow($cache,$join,$cIdx,($p_count-1),$r,$color,\%GraphDat);
1.1 stredwic 520: }
1.2 minaeibi 521: &CloseTable($cache,$r);
1.1 stredwic 522: }
1.5 minaeibi 523: ### &Close_PrgWin();
1.1 stredwic 524: #666666
525: # close( OUT );
526: #666666
527: }
528:
529: =pod
530: sub Cache_Statistics {
1.2 minaeibi 531: my ($cache,$color)=@_;
1.1 stredwic 532: my @list = ();
533: my $Useful;
534: my $UnUseful;
535: # $r->print('<input type="hidden" name="show" value="excel" />'."\n");
536: my %myHeader = reverse( %Header );
537: $Pos = $myHeader{$ENV{'form.sort'}};
538: if ($Pos > 0) {$Pos++;}
539: my $p_count = 0;
540: foreach my $key( keys %CachData) {
541: my @Temp=split(/\&/,$CachData{$key});
542: if ( $Pos == 0 ) {
543: ($UnUseful,$Useful)=split(/\>/,$Temp[$Pos]);
544: }
545: else {
546: $Useful = $Temp[$Pos];
547: }
548: $list[$p_count]=$Useful.'@'.$CachData{$key};
549: $p_count++;
550: }
551:
552: @list = sort MySort (@list);
553:
554: my $nIndex=0;
555:
556: if ( $Pos == 0 ) {
557: foreach (sort keys %mapsort) {
558: my ($Hid,$pr)=split(/\:/,$mapsort{$_});
559: &CreateProblemStatisticsTableHeading($cache,1,$Hid);
560: my @lpr=split(/\&/,$pr);
561: for (my $i=1; $i<=$#lpr; $i++) {
562: my($Pre, $Post) = split(/\@/,$list[$nIndex]);
563: #$r->print('<br>'.$Pre.'---'.$Post);
1.5 minaeibi 564: &TableRow($cache,$Post,$i,$nIndex,$color,\%GraphDat);
1.1 stredwic 565: $nIndex++;
566: }
567: &CloseTable($cache);
568: }
569: }
570: else {
571: &CreateProblemStatisticsTableHeading($cache,0);
572: for ( my $nIndex = 0; $nIndex < $p_count; $nIndex++ ) {
573: my($Pre, $Post) = split(/\@/,$list[$nIndex]);
1.5 minaeibi 574: &TableRow($cache,$Post,$nIndex,$nIndex,$color,\%GraphDat);
1.1 stredwic 575: }
576: &CloseTable($cache);
577: }
578: }
579: =cut
580:
581: sub TableRow {
1.2 minaeibi 582: my ($cache,$Str,$Idx,$RealIdx,$r,$color,$GraphDat)=@_;
1.1 stredwic 583: my($PrOrd,$Temp,$StdNo,$TotalTries,$MxTries,$Avg,$YES,$Override,
584: $Wrng,$DoD,$SD,$Sk,$_D1,$_D2,$DiscNo,$Prob)=split(/\&/,$Str);
1.5 minaeibi 585: # $r->print('<br>'.$Str);
1.8 ! minaeibi 586: my $Ptr;
1.1 stredwic 587: if ($ENV{'form.showcsv'}) {
588: my ($ResId,$Dummy)=split(/\*/,$Prob);
1.8 ! minaeibi 589: $Ptr="\n".'<br>'.
! 590: "\n".'"'.($RealIdx+1).'",'.
! 591: "\n".'"'.$cache->{'title_'.$ResId}.$Dummy.'",'.
! 592: "\n".'"'.$cache->{'src_'.$ResId}.'",'.
! 593: "\n".'"'.$StdNo.'",'.
! 594: "\n".'"'.$TotalTries.'",'.
! 595: "\n".'"'.$MxTries.'",'.
! 596: "\n".'"'.$Avg.'",'.
! 597: "\n".'"'.$YES.'",'.
! 598: "\n".'"'.$Override.'",'.
! 599: "\n".'"'.$Wrng.'",'.
! 600: "\n".'"'.$DoD.'",'.
! 601: "\n".'"'.$SD.'",'.
! 602: "\n".'"'.$Sk.'",'.
! 603: "\n".'"'.$_D1.'",'.
! 604: "\n".'"'.$_D2.'"'.
! 605: "\n".'"'.$DiscNo.'"';
1.1 stredwic 606:
607: $r->print("\n".$Ptr);
1.8 ! minaeibi 608: } else {
! 609: $Ptr="\n".'<tr>'.
! 610: "\n".'<td>'.($RealIdx+1).'</td>'.
! 611: # "\n".'<td>'.$PrOrd.$Temp.'</td>'.
! 612: "\n".'<td>'.$Temp.'</td>'.
! 613: "\n".'<td bgcolor='.$color->{"yellow"}.'> '.$StdNo.'</td>'.
! 614: "\n".'<td bgcolor='.$color->{"yellow"}.'>'.$TotalTries.'</td>'.
! 615: "\n".'<td bgcolor='.$color->{"yellow"}.'>'.$MxTries.'</td>'.
! 616: "\n".'<td bgcolor='.$color->{"gb"}.'>'.$Avg.'</td>'.
! 617: "\n".'<td bgcolor='.$color->{"gb"}.'> '.$YES.'</td>'.
! 618: "\n".'<td bgcolor='.$color->{"gb"}.'> '.$Override.'</td>'.
! 619: "\n".'<td bgcolor='.$color->{"red"}.'> '.$Wrng.'</td>'.
! 620: "\n".'<td bgcolor='.$color->{"red"}.'> '.$DoD.'</td>'.
! 621: "\n".'<td bgcolor='.$color->{"green"}.'> '.$SD.'</td>'.
! 622: "\n".'<td bgcolor='.$color->{"green"}.'> '.$Sk.'</td>'.
! 623: "\n".'<td bgcolor='.$color->{"purple"}.'> '.$_D1.'</td>'.
! 624: "\n".'<td bgcolor='.$color->{"purple"}.'> '.$_D2.'</td>'.
! 625: "\n".'<td bgcolor='.$color->{"yellow"}.'> '.$DiscNo.'</td>';
1.1 stredwic 626: $r->print("\n".$Ptr.'</tr>' );
627: }
1.5 minaeibi 628: # $GraphDat->{$RealIdx}=$DoD.':'.$Wrng;
1.1 stredwic 629: }
1.5 minaeibi 630:
631:
632: # For loading the colored table for display or un-colored for print
633: sub setbgcolor {
634: my $PrintTable=shift;
635: my %color;
636: if ($PrintTable){
637: $color{"gb"}="#FFFFFF";
638: $color{"red"}="#FFFFFF";
639: $color{"yellow"}="#FFFFFF";
640: $color{"green"}="#FFFFFF";
641: $color{"purple"}="#FFFFFF";
642: } else {
643: $color{"gb"}="#DDFFFF";
644: $color{"red"}="#FFDDDD";
645: $color{"yellow"}="#EEFFCC";
646: $color{"green"}="#DDFFDD";
647: $color{"purple"}="#FFDDFF";
648: }
649:
650: return \%color;
651: }
652:
1.1 stredwic 653:
654: sub StatusOptions {
655: my ($cache)=@_;
656:
657: my $Status = $cache->{'Status'};
658: my $OpSel1 = '';
659: my $OpSel2 = '';
660: my $OpSel3 = '';
661:
662: if($Status eq 'Any') { $OpSel3 = ' selected'; }
663: elsif($Status eq 'Expired' ) { $OpSel2 = ' selected'; }
664: else { $OpSel1 = ' selected'; }
665:
666: my $Ptr = '';
667: $Ptr .= '<tr><td align="right"><b>Student Status:</b></td>'."\n";
668: $Ptr .= '<td align="left"><select name="Status">';
669: $Ptr .= '<option'.$OpSel1.'>Active</option>'."\n";
670: $Ptr .= '<option'.$OpSel2.'>Expired</option>'."\n";
671: $Ptr .= '<option'.$OpSel3.'>Any</option>'."\n";
672: $Ptr .= '</select></td></tr>'."\n";
673:
674: return $Ptr;
675: }
676:
677: sub AscendOrderOptions {
678: my ($order)=@_;
679:
680: my $OpSel1 = '';
681: my $OpSel2 = '';
682:
683: if($order eq 'Ascending') {
684: $OpSel1 = ' selected';
685: } else {
686: $OpSel2 = ' selected';
687: }
688:
689: my $Ptr = '';
690: $Ptr .= '<tr><td align="right"><b>Sorting Type:</b></td>'."\n";
691: $Ptr .= '<td align="left"><select name="Ascend">'."\n";
692: $Ptr .= '<option'.$OpSel1.'>Ascending</option>'."\n".
693: '<option'.$OpSel2.'>Descending</option>'."\n";
694: $Ptr .= '</select></td></tr>'."\n";
695:
696: return $Ptr;
697: }
698:
699: sub ProblemStatisticsButtons {
700: my ($displayFormat)=@_;
701:
702: my $Ptr = '<tr><td></td><td align="left">';
703: $Ptr .= '<input type=submit name="ProblemStatisticsRecalculate" ';
704: $Ptr .= 'value="Recalculate Statistics"/>'."\n";
705: $Ptr .= ' ';
706: $Ptr .= '<input type="submit" name="DoDiffGraph" ';
707: $Ptr .= 'value="DoDiff Graph" />'."\n";
708: $Ptr .= ' ';
709: $Ptr .= '<input type="submit" name="PercentWrongGraph" ';
710: $Ptr .= 'value="%Wrong Graph" />'."\n";
711: $Ptr .= ' ';
712: $Ptr .= '<input type="submit" name="DisplayCSVFormat" ';
713: if($displayFormat eq 'Display CSV Format') {
714: $Ptr .= 'value="Display CSV Format" />'."\n";
715: } else {
716: $Ptr .= 'value="Display Table Format" />'."\n";
717: }
718: $Ptr .= '</td></tr>';
719:
720: return $Ptr;
721: }
722:
723: sub ProblemStatisticsLegend {
724: my $Ptr = '';
725: $Ptr = '<table border="0">';
726: $Ptr .= '<tr><td>';
1.6 minaeibi 727: $Ptr .= '<b>#Stdnts</b></td>';
1.1 stredwic 728: $Ptr .= '<td>Total Number of Students opened the problem.';
729: $Ptr .= '</td></tr><tr><td>';
1.6 minaeibi 730: $Ptr .= '<b>Tries</b></td>';
1.1 stredwic 731: $Ptr .= '<td>Total Number of Tries for solving the problem.';
732: $Ptr .= '</td></tr><tr><td>';
1.6 minaeibi 733: $Ptr .= '<b>Mod</b></td>';
1.1 stredwic 734: $Ptr .= '<td>Maximunm Number of Tries for solving the problem.';
735: $Ptr .= '</td></tr><tr><td>';
1.6 minaeibi 736: $Ptr .= '<b>Mean</b></td>';
1.1 stredwic 737: $Ptr .= '<td>Average Number of the tries. [ Tries / #Stdnts ]';
738: $Ptr .= '</td></tr><tr><td>';
1.6 minaeibi 739: $Ptr .= '<b>#YES</b></td>';
1.1 stredwic 740: $Ptr .= '<td>Number of students solved the problem correctly.';
741: $Ptr .= '</td></tr><tr><td>';
1.6 minaeibi 742: $Ptr .= '<b>#yes</b></td>';
1.1 stredwic 743: $Ptr .= '<td>Number of students solved the problem by override.';
744: $Ptr .= '</td></tr><tr><td>';
1.6 minaeibi 745: $Ptr .= '<b>%Wrng</b></td>';
1.1 stredwic 746: $Ptr .= '<td>Percentage of students tried to solve the problem ';
747: $Ptr .= 'but still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ]';
748: $Ptr .= '</td></tr><tr><td>';
1.6 minaeibi 749: $Ptr .= '<b>DoDiff</b></td>';
1.1 stredwic 750: $Ptr .= '<td>Degree of Difficulty of the problem. ';
751: $Ptr .= '[ 1 - ((#YES+#yes) / Tries) ]';
752: $Ptr .= '</td></tr><tr><td>';
1.6 minaeibi 753: $Ptr .= '<b>S.D.</b></td>';
1.1 stredwic 754: $Ptr .= '<td>Standard Deviation of the tries. ';
755: $Ptr .= '[ sqrt(sum((Xi - Mean)^2)) / (#Stdnts-1) ';
756: $Ptr .= 'where Xi denotes every student\'s tries ]';
757: $Ptr .= '</td></tr><tr><td>';
1.6 minaeibi 758: $Ptr .= '<b>Skew.</b></td>';
1.1 stredwic 759: $Ptr .= '<td>Skewness of the students tries.';
760: $Ptr .= '[(sqrt( sum((Xi - Mean)^3) / #Stdnts)) / (S.D.^3)]';
761: $Ptr .= '</td></tr><tr><td>';
1.6 minaeibi 762: $Ptr .= '<b>Dis.F.</b></td>';
1.1 stredwic 763: $Ptr .= '<td>Discrimination Factor: A Standard for evaluating the ';
764: $Ptr .= 'problem according to a Criterion<br>';
765: $Ptr .= '<b>[Applied Criterion in %27 Upper Students - ';
766: $Ptr .= 'Applied the same Criterion in %27 Lower Students]</b><br>';
767: $Ptr .= '<b>1st Criterion</b> for Sorting the Students: ';
768: $Ptr .= '<b>Sum of Partial Credit Awarded / Total Number of Tries</b><br>';
769: $Ptr .= '<b>2nd Criterion</b> for Sorting the Students: ';
770: $Ptr .= '<b>Total number of Correct Answers / Total Number of Tries</b>';
771: $Ptr .= '</td></tr>';
772: $Ptr .= '<tr><td><b>Disc.</b></td>';
773: $Ptr .= '<td>Number of Students had at least one discussion.';
774: $Ptr .= '</td></tr></table>';
775:
776: return $Ptr;
777: }
778:
1.4 minaeibi 779: #------- Processing upperlist and lowerlist according to each problem
780: sub ProcessDiscriminant {
1.7 minaeibi 781: my ($List,$r) = @_;
1.4 minaeibi 782: my @sortedList = sort (@$List);
783: my $Count = scalar @sortedList;
784: my $Problem;
785: my @Dis;
786: my $Slvd=0;
787: my $tmp;
788: my $Sum1=0;
789: my $Sum2=0;
790: my $nIndex=0;
791: my $nStudent=0;
792: my %Proc=undef;
793: while ($nIndex<$Count) {
1.7 minaeibi 794: # $r->print("<br> $nIndex) $sortedList[$nIndex]");
1.4 minaeibi 795: ($Problem,$tmp)=split(/\=/,$sortedList[$nIndex]);
796: @Dis=split(/\+/,$tmp);
797: my $Temp = $Problem;
798: do {
799: $nIndex++;
800: $nStudent++;
801: $Sum1 += $Dis[0];
802: $Sum2 += $Dis[1];
803: ($Problem,$tmp)=split(/\=/,$sortedList[$nIndex]);
804: @Dis=split(/\+/,$tmp);
805: } while ( $Problem eq $Temp && $nIndex < $Count );
806: $Proc{$Temp}=($Sum1/$nStudent).':'.($Sum2/$nStudent);
1.7 minaeibi 807: # $r->print("<br> $nIndex) $Temp --> ($nStudent) $Proc{$Temp}");
1.4 minaeibi 808: $Sum1=0;
809: $Sum2=0;
810: $nStudent=0;
811: }
812:
813: return %Proc;
814: }
815:
816: #------- Creating Discimination factor
817: sub Discriminant {
1.7 minaeibi 818: my ($discriminant,$r)=@_;
819: #$Apache::lonxml::debug=1;
820: #&Apache::lonhomework::showhash(%$discriminant);
821: #$Apache::lonxml::debug=0;
822: my @discriminantKeys=keys(%$discriminant);
1.4 minaeibi 823: my $Count = scalar @discriminantKeys;
824:
825: my $UpCnt = int(0.27*$Count);
826: my $low=0;
827: my $up=$Count-$UpCnt;
828: my @UpList=();
829: my @LowList=();
830:
831: $Count=0;
832: foreach my $key (sort(@discriminantKeys)) {
833: $Count++;
834: if($low < $UpCnt || $Count > $up) {
835: $low++;
1.7 minaeibi 836: my $str=$discriminant->{$key};
837: foreach(split(/\&/,$str)){
1.4 minaeibi 838: if($_) {
839: if($low<$UpCnt) { push(@LowList,$_); }
840: else { push(@UpList,$_); }
841: }
842: }
843: }
844: }
1.7 minaeibi 845: my %DisUp = &ProcessDiscriminant(\@UpList,$r);
846: my %DisLow = &ProcessDiscriminant(\@LowList,$r);
1.4 minaeibi 847:
848: return (\%DisUp, \%DisLow);
1.8 ! minaeibi 849: }
1.4 minaeibi 850:
1.1 stredwic 851: #---- END Problem Statistics Web Page ----------------------------------------
852:
853: #---- Problem Statistics Graph Web Page --------------------------------------
854:
855: # ------------------------------------------- Prepare data for Graphical chart
856:
1.4 minaeibi 857: sub BuildDiffGraph {
858: my ($r)=@_;
859:
860: my $graphData = &GetGraphData('DiffGraph', $r);
861: return '<IMG src="/cgi-bin/graph.gif?'.$graphData.'" />';
862: }
863:
864: sub BuildWrongGraph {
865: my ($r)=@_;
866:
867: my $graphData = &GetGraphData('WrongGraph', $r);
868: return '<IMG src="/cgi-bin/graph.gif?'.$graphData.'" />';
869: }
870:
871:
1.1 stredwic 872: sub GetGraphData {
1.2 minaeibi 873: my ($ylab,$r,%GraphDat)=@_;
1.1 stredwic 874: my $Col;
875: my $data='';
876: my $count = 0;
877: my $Max = 0;
878: my $cid=$ENV{'request.course.id'};
879: my $GraphDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
880: "_$ENV{'user.domain'}_$cid\_graph.db";
881: foreach (keys %GraphDat) {delete $GraphDat{$_};}
882: if (-e "$GraphDB") {
883: if (tie(%GraphDat,'GDBM_File',"$GraphDB",&GDBM_READER,0640)) {
884: if ( $ylab eq 'DoDiff Graph' ) {
885: $ylab = 'Degree-of-Difficulty';
886: $Col = 0;
887: }
888: else {
889: $ylab = 'Wrong-Percentage';
890: $Col = 1;
891: }
892: foreach (sort NumericSort keys %GraphDat) {
893: my @Temp=split(/\:/,$GraphDat{$_});
894: my $inf = $Temp[$Col];
895: if ( $Max < $inf ) {$Max = $inf;}
896: $data .= $inf.',';
897: $count++;
898: }
899: if ( $Max > 1 ) {
900: $Max += (10 - $Max % 10);
901: $Max = int($Max);
902: }
903: else { $Max = 1; }
904: untie(%GraphDat);
905: my $Course = $ENV{'course.'.$cid.'.description'};
906: $Course =~ s/\ /"_"/eg;
1.3 minaeibi 907: my $GData=$Course.'&'.'Problems'.'&'.$ylab.'&'.
908: $Max.'&'.$count.'&'.$data;
1.1 stredwic 909: }
910: else {
911: $r->print("Unable to tie hash to db file");
912: }
913: }
914: }
1.4 minaeibi 915:
916:
1.1 stredwic 917: 1;
918: __END__
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