version 1.4, 2002/07/27 20:48:36
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version 1.25, 2002/08/14 16:18:55
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Line 31
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Line 31
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# 11/1,11/4,11/16,12/14,12/16,12/18,12/20,12/31 Behrouz Minaei |
# 11/1,11/4,11/16,12/14,12/16,12/18,12/20,12/31 Behrouz Minaei |
# YEAR=2002 |
# YEAR=2002 |
# 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 |
# 1/22,2/1,2/6,2/25,3/2,3/6,3/17,3/21,3/22,3/26,4/7,5/6 Behrouz Minaei |
# 5/12,5/14,5/15,5/19,5/26,7/16,7/25 Behrouz Minaei |
# 5/12,5/14,5/15,5/19,5/26,7/16,7/25,7/29,8/5 Behrouz Minaei |
# |
# |
### |
### |
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Line 43 use Apache::lonhtmlcommon;
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Line 43 use Apache::lonhtmlcommon;
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use Apache::loncoursedata; |
use Apache::loncoursedata; |
use GDBM_File; |
use GDBM_File; |
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my $jr; |
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sub BuildProblemStatisticsPage { |
sub BuildProblemStatisticsPage { |
my ($cacheDB, $students, $courseID, $c, $r,%color)=@_; |
my ($cacheDB, $students, $courseID, $c, $r)=@_; |
my %cache; |
my %cache; |
#my %DoDiff; |
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unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER,0640)) { |
$jr = $r; |
return '<html><body>Unable to tie database.</body></html>'; |
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unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) { |
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$r->print('Unable to tie database.'); |
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return; |
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} |
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# Remove students who don't have the proper section. |
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my @sectionsSelected = split(':',$cache{'sectionsSelected'}); |
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for(my $studentIndex=((scalar @$students)-1); $studentIndex>=0; |
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$studentIndex--) { |
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my $value = $cache{$students->[$studentIndex].':section'}; |
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my $found = 0; |
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foreach (@sectionsSelected) { |
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if($_ eq 'none') { |
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if($value eq '' || !defined($value) || $value eq ' ') { |
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$found = 1; |
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last; |
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} |
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} else { |
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if($value eq $_) { |
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$found = 1; |
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last; |
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} |
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} |
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} |
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if($found == 0) { |
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splice(@$students, $studentIndex, 1); |
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} |
} |
} |
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my $Ptr = ''; |
my $Ptr = ''; |
$Ptr .= '<table border="0"><tbody>'; |
$Ptr .= '<table border="0"><tbody>'; |
$Ptr .= '<tr><td align="right"><b>Select Map</b></td>'."\n"; |
$Ptr .= '<tr><td align="right"><b>Select Map</b></td>'."\n"; |
$Ptr .= '<td align="left">'; |
$Ptr .= '<td align="left">'; |
$Ptr .= &Apache::lonhtmlcommon::MapOptions(\%cache, 'ProblemStatistics'); |
$Ptr .= &Apache::lonhtmlcommon::MapOptions(\%cache, 'ProblemStatistics', |
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'Statistics'); |
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$Ptr .= '</td></tr>'."\n"; |
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$Ptr .= '<tr><td align="right"><b>Sorting Type:</b></td>'."\n"; |
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$Ptr .= '<td align="left">'."\n"; |
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$Ptr .= &Apache::lonhtmlcommon::AscendOrderOptions( |
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$cache{'ProblemStatisticsAscend'}, |
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'ProblemStatistics', |
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'Statistics'); |
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$Ptr .= '</td></tr>'."\n"; |
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$Ptr .= '<tr><td align="right"><b>Select Sections</b>'; |
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$Ptr .= '</td>'."\n"; |
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$Ptr .= '<td align="left">'."\n"; |
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my @sections = split(':',$cache{'sectionList'}); |
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$Ptr .= &Apache::lonhtmlcommon::MultipleSectionSelect(\@sections, |
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\@sectionsSelected, |
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'Statistics'); |
$Ptr .= '</td></tr>'."\n"; |
$Ptr .= '</td></tr>'."\n"; |
$Ptr .= &AscendOrderOptions($cache{'Ascend'}); |
$Ptr .= &ProblemStatisticsButtons($cache{'DisplayFormat'}, |
$Ptr .= &ProblemStatisticsButtons($cache{'DisplayFormat'}); |
$cache{'DisplayLegend'}); |
$Ptr .= '</table>'; |
$Ptr .= '</table>'; |
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if($cache{'DisplayLegend'} eq 'Show Legend') { |
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$Ptr .= &ProblemStatisticsLegend(); |
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} |
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$r->print($Ptr); |
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$r->rflush(); |
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$Ptr .= &ProblemStatisticsLegend(); |
my @Header = ("Homework Sets Order","#Stdnts","Tries","Mod", |
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"Mean","#YES","#yes","%Wrng","DoDiff", |
untie(%cache); |
"S.D.","Skew.","D.F.1st","D.F.2nd","Disc."); |
foreach (@$students) { |
my $color=&setbgcolor(0); |
my $courseData = |
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&Apache::loncoursedata::DownloadCourseInformation($_, $courseID); |
# my %Discuss=&Apache::loncoursedata::LoadDiscussion($courseID); |
last if ($c->aborted()); |
my $lastStatus = (defined($cache{'StatisticsLastStatus'})) ? |
if(tie(%cache,'GDBM_File',$cacheDB,&GDBM_WRCREAT,0640)) { |
$cache{'StatisticsLastStatus'} : 'Nothing'; |
&Apache::loncoursedata::ProcessStudentData(\%cache, |
my $whichStudents = join(':::',sort(@$students)); |
$courseData, $_); |
if(!defined($cache{'StatisticsCached'}) || |
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$lastStatus ne $cache{'Status'} || |
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$whichStudents ne $cache{'StatisticsWhichStudents'}) { |
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if(defined($cache{'StatisticsCached'})) { |
untie(%cache); |
untie(%cache); |
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unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_WRCREAT(),0640)) { |
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$r->print('Unable to tie database.'); |
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return; |
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} |
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my @statkeys = split(':::', $cache{'StatisticsKeys'}); |
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delete $cache{'StatisticsKeys'}; |
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delete $cache{'StatisticsCached'}; |
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foreach(@statkeys) { |
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delete $cache{$_}; |
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} |
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} |
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untie(%cache); |
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&Apache::loncoursedata::DownloadStudentCourseDataSeparate($students, |
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'true', |
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$cacheDB, |
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'true', |
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'true', |
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$courseID, |
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$r, $c); |
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if($c->aborted()) { return; } |
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unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) { |
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$r->print('Unable to tie database.'); |
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return; |
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} |
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my ($problemData) = &ExtractStudentData(\%cache, $students); |
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&CalculateStatistics($problemData, \%cache); |
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untie(%cache); |
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unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_WRCREAT(),0640)) { |
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$r->print('Unable to tie database.'); |
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return; |
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} |
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foreach(keys(%$problemData)) { |
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$cache{$_} = $problemData->{$_}; |
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} |
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$cache{'StatisticsKeys'} = join(':::', keys(%$problemData)); |
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$cache{'StatisticsCached'} = 'true'; |
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$cache{'StatisticsLastStatus'} = $cache{'Status'}; |
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$cache{'StatisticsWhichStudents'} = $whichStudents; |
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untie(%cache); |
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unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) { |
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$r->print('Unable to tie database.'); |
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return; |
} |
} |
} |
} |
if($c->aborted()) { return $Ptr; } |
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unless(tie(%cache,'GDBM_File',$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 $discriminantFactor; |
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my @list=(); |
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my %Discuss=&Apache::loncoursedata::LoadDiscussion($courseID); |
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my $index=0; |
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foreach (@$students) { |
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$index++; |
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#&Apache::lonstatistics::Update_PrgWin(++$index,$r); |
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$discriminantFactor = &ExtractStudentData(\%cache, $_, \@list, |
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\%Discuss, $r); |
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} |
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#&Apache::lonstatistics::Close_PrgWin($r); |
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my ($upper, $lower) = &Discriminant($discriminantFactor); |
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my %Header = (0,"Homework Sets Order",1,"#Stdnts",2,"Tries",3,"Mod", |
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4,"Mean",5,"#YES",6,"#yes",7,"%Wrng",8,"DoDiff", |
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9,"S.D.",10,"Skew.",11,"D.F.1st",12,"D.F.2nd", 13, "Disc."); |
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my %GraphDat= &BuildStatisticsTable(\%cache, $discriminantFactor, \@list, |
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\%Header, $students, $r, \%color); |
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my $orderedProblems = &SortProblems(\%cache, |
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$cache{'ProblemStatisticsSort'}, |
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$cache{'ProblemStatisticsAscend'}); |
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&BuildStatisticsTable(\%cache, $cache{'DisplayFormat'}, $orderedProblems, |
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\@Header, $r, $color); |
untie(%cache); |
untie(%cache); |
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return $Ptr; |
return; |
} |
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#---- Problem Statistics Web Page --------------------------------------- |
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sub NumericSort { |
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$a <=> $b; |
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} |
} |
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sub BuildGraphicChart { |
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my ($graph,$cacheDB,$courseDescription,$r)=@_; |
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my %cache; |
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my $max = 0; |
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sub CreateProblemStatisticsTableHeading { |
unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) { |
my ($displayFormat,$sequenceSource,$sequenceTitle,$headings,$r)=@_; |
return '<html><body>Unable to tie database.</body></html>'; |
if($displayFormat eq 'Display CSV Format') { |
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$r->print('<br>"'.$sequenceTitle.'","'); |
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$r->print($sequenceSource.'"'); |
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return; |
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} |
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$r->print('<br><a href="'.$sequenceSource. |
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'" target="_blank">'.$sequenceTitle.'</a>'); |
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my $Result = "\n".'<table border=2><tr><th>P#</th>'."\n"; |
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for(my $nIndex=0; $nIndex < (scalar (keys %$headings)); $nIndex++) { |
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$Result .= '<th>'.'<input type="submit" name="'; |
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$Result .= 'ProblemStatisticsHeading" value="'; |
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$Result .= $headings->{$nIndex}.'" />'.'</th>'."\n"; |
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} |
} |
$Result .= "\n".'</tr>'."\n"; |
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$r->print($Result); |
my @problems = split(':::', $cache{'problemList'}); |
$r->rflush(); |
my @values = (); |
} |
foreach (@problems) { |
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my $data = 0; |
sub CloseTable { |
if($graph eq 'DoDiffGraph') { |
my ($cache,$r)=@_; |
$data = sprintf("%.2f", $cache{$_.':degreeOfDifficulty'}), |
if($cache->{'DisplayFormat'} eq 'Display CSV Format') { |
} else { |
return; |
$data = sprintf("%.1f", $cache{$_.':percentWrong'}), |
} |
} |
$r->print("\n".'</table>'."\n"); |
if($max < $data) { |
$r->rflush(); |
$max = $data; |
} |
} |
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push(@values, $data); |
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} |
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untie(%cache); |
# ------ Dump the Student's DB file and handling the data for statistics table |
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sub ExtractStudentData { |
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my ($cache,$name,$list,$Discuss,$r)=@_; |
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my %discriminantFactor; |
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my $totalTries = 0; |
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my $totalAwarded = 0; |
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my $tempProblemOrder=0; |
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my $spent=0; |
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my $spent_yes=0; |
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my $TotDiscuss=0; |
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my $TotalOpend = 0; |
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my $ProbSolved = 0; |
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my $ProbTot = 0; |
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my $TotFirst = 0; |
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my $TimeTot = 0; |
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my $Discussed=0; |
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$Apache::lonxml::debug=1; |
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#&Apache::lonhomework::showhash(%$cache); |
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$Apache::lonxml::debug=0; |
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foreach my $sequence (split(':', $cache->{'orderedSequences'})) { |
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# if($cache->{'ProblemStatisticsMap'} ne 'All Maps' && |
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# $cache->{'ProblemStatisticsMap'} ne $cache->{$sequence.':title'}) { |
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# $r->print("<br>$name --- $sequence"); |
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# $r->print("<br>".$cache->{$sequence.':title'}); |
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# next; |
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# } |
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my $Dis = ''; |
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foreach my $problemID (split(':', $cache->{$sequence.':problems'})) { |
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my $problem = $cache->{$problemID.':problem'}; |
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$r->print("<br>$problemID === $problem"); |
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my $LatestVersion = $cache->{$name.':version:'.$problem}; |
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# Output dashes for all the parts of this problem if there |
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# is no version information about the current problem. |
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#if(!$LatestVersion) { |
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# foreach my $part (split(/\:/,$cache->{$sequence.':'. |
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# $problemID. |
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# ':parts'})) { |
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# $codes .= "-,"; |
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# $attempts .= "0,"; |
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# } |
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# next; |
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#} |
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my %partData=undef; |
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# Initialize part data, display skips correctly |
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# Skip refers to when a student made no submissions on that |
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# part/problem. |
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foreach my $part (split(/\:/,$cache->{$sequence.':'. |
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$problemID. |
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':parts'})) { |
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$partData{$part.':tries'}=0; |
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$partData{$part.':code'}='-'; |
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} |
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# Looping through all the versions of each part, starting with the |
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# oldest version. Basically, it gets the most recent |
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# set of grade data for each part. |
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for(my $Version=1; $Version<=$LatestVersion; $Version++) { |
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foreach my $part (split(/\:/,$cache->{$sequence.':'. |
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$problemID. |
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':parts'})) { |
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if(!defined($cache->{$name.":$Version:$problem". |
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":resource.$part.solved"})) { |
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# No grade for this submission, so skip |
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next; |
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} |
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my $tries=0; |
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my $time=0; |
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my $awarded=0; |
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$Discussed=0; |
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my $code='U'; |
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$awarded = $cache->{$name. |
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"$Version:$problem:resource.". |
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"$part.awarded"}; |
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$partData{$part.':awarded'} = ($awarded) ? $awarded : 0; |
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$totalAwarded += $awarded; |
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$tries = $cache->{$name.":$Version:$problem". |
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":resource.$part.tries"}; |
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$partData{$part.':tries'} = ($tries) ? $tries : 0; |
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$partData{$part.':wrong'} = $partData{$part.':tries'}; |
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$totalTries += $tries; |
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my $val = $cache->{$name.":$Version:$problem". |
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":resource.$part.solved"}; |
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if ($val eq 'correct_by_student') {$code = 'C';} |
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elsif ($val eq 'correct_by_override') {$code = 'O';} |
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elsif ($val eq 'incorrect_attempted') {$code = 'I';} |
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elsif ($val eq 'incorrect_by_override'){$code = 'I';} |
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elsif ($val eq 'excused') {$code = 'x';} |
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$partData{$part.':code'}=$code; |
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if($partData{$part.':wrong'} ne 0 && |
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($code eq 'C' || $code eq 'O')) { |
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$partData{$part.':wrong'}--; |
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} |
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} |
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} |
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# Loop through all the parts for the current problem in the |
my $sendValues = join(',', @values); |
# correct order and prepare the output |
my $sendCount = scalar(@values); |
foreach (split(/\:/,$cache->{$sequence.':'.$problemID. |
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':parts'})) { |
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#$r->print("<br>".$cache->{$sequence.':title'}); |
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my $Yes = 0; |
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if($partData{$_.':code'} eq 'C' || |
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$partData{$_.':code'} eq 'O') { |
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$Yes=1; |
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} |
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my $ptr = $tempProblemOrder.'&'.$problemID; |
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if($_ > 1) { |
my $title = ''; |
$ptr .= "*(part $_)"; |
if($graph eq 'DoDiffGraph') { |
$Dis .= '&'; |
$title = 'Degree-of-Difficulty'; |
} |
} else { |
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$title = 'Wrong-Percentage'; |
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} |
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my @GData = ($courseDescription, 'Problems', $title, $max, $sendCount, |
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$sendValues); |
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my ($pr_no,$dod)=split('&',$ptr); |
$r->print('</form>'."\n"); |
# my $DoDiff=$DoDiff->{$dod}; |
$r->print('<IMG src="/cgi-bin/graph.gif?'.(join('&', @GData)).'" border="1" />'); |
# $r->print('<br>'.$name.'---'.$ptr.'==='.$DoDiff); |
$r->print('<form>'."\n"); |
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my $Fac = ($partData{$_.':Tries'}) ? |
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($partData{$_.':awarded'}/$partData{$_.':tries'}) : 0; |
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my $DisF; |
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if($Fac > 0 && $Fac < 1) { |
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$DisF = sprintf( "%.4f", $Fac ); |
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} else { |
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$DisF = $Fac; |
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} |
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if ($Discuss->{"$name:$problem"}) { |
return; |
$TotDiscuss++; |
} |
$Discussed=1; |
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} |
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my $time = $cache->{"$name:$LatestVersion:$problem:timestamp"}; |
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$Dis .= $tempProblemOrder.'='.$DisF.'+'.$Yes; |
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$ptr .= '&'.$partData{$_.'.tries'}. |
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'&'.$partData{$_.'.wrongs'}. |
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'&'.$partData{$_.'.code'}; |
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push (@$list, $ptr."&$Discussed"); |
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$r->print('<br>'.$name.'---'.$ptr); |
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#### if ($DoDiff>0.85) { |
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$TimeTot += $time; |
#---- Problem Statistics Web Page --------------------------------------- |
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if ($Yes==1 && $partData{$_.'.Tries'}==1) { |
sub CreateProblemStatisticsTableHeading { |
$TotFirst++; |
my ($headings,$r)=@_; |
} |
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# my $Acts= $Activity->{$name.':'.$problem}; |
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# if ($Acts) { |
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# my $Pt=&ProcAct( $Acts, $time ); |
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#my ($spe,$beg) = split(/\+/,$Pt); |
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# my $spe= $Pt; |
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# if ($Yes==1) {$spent_yes += $spe;} |
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# $spent += $spe; |
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#$Beg += $beg; |
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# $r->print('<br>'.$name.'---'.$problem.'---'.$spe); |
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# } |
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$TotalOpend++; |
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$ProbTot++; |
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$tempProblemOrder++; |
my $Str=''; |
} |
$Str .= '<tr>'."\n"; |
} |
$Str .= '<th bgcolor="#ffffe6">P#</th>'."\n"; |
my $pstr; |
foreach(@$headings) { |
if($totalTries) { |
$Str .= '<th bgcolor="#ffffe6">'.'<a href="/adm/statistics?reportSelected='; |
my $DisFac = ($totalAwarded/$totalTries); |
$Str .= &Apache::lonnet::escape('Problem Statistics'); |
my $DisFactor = sprintf( "%.4f", $DisFac ); |
$Str .= '&ProblemStatisticsSort='; |
my $TS = sprintf( "%.2f", $spent ); |
$Str .= &Apache::lonnet::escape($_).'">'.$_.'</a> </th>'."\n"; |
my $TS_yes = sprintf( "%.2f", $spent_yes ); |
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# $DiscFac{$DisFactor}=$Dis; |
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$pstr=$DisFactor.':'.$name.':'.$ProbTot.':'.$TotalOpend.':'. |
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$totalTries.':'.$ProbSolved.':'.$TotFirst.':'. |
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$TS_yes.':'.$TS.':'.$TotDiscuss; |
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$discriminantFactor{$pstr}=$Dis; |
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} |
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} |
} |
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$Str .= "\n".'</tr>'."\n"; |
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return (\%discriminantFactor); |
return $Str; |
} |
} |
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=pod |
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sub MySort { |
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if ( $Pos > 0 ) { |
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if ($ENV{'form.order'} eq 'Descending') {$b <=> $a;} |
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else { $a <=> $b; } |
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} |
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else { |
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if ($ENV{'form.order'} eq 'Descending') {$b cmp $a;} |
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else { $a cmp $b; } |
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} |
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} |
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=cut |
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sub BuildStatisticsTable { |
sub BuildStatisticsTable { |
my ($cache,$discriminantFactor,$list,$headings,$students,$r,%color)=@_; |
my ($cache,$displayFormat,$orderedProblems,$headings,$r,$color)=@_; |
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#6666666 |
#6666666 |
# my $file="/home/httpd/perl/tmp/183d.txt"; |
# my $file="/home/httpd/perl/tmp/183d.txt"; |
Line 364 sub BuildStatisticsTable {
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Line 260 sub BuildStatisticsTable {
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## 'Loading Discussion...";</script>'); |
## 'Loading Discussion...";</script>'); |
## my ($doDiffFile) = &LoadDoDiffFile(); |
## my ($doDiffFile) = &LoadDoDiffFile(); |
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my $p_count = 0; |
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my $nIndex = 0; |
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my $dummy; |
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my $p_val; |
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my $ResId; |
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my %GraphDat; |
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my $NoElements = scalar @$list; |
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foreach my $sequence (split(':', $cache->{'orderedSequences'})) { |
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|
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&CreateProblemStatisticsTableHeading($cache->{'DisplayFormat'}, |
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$cache->{$sequence.':source'}, |
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$cache->{$sequence.':title'}, |
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$headings,$r); |
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foreach my $problemID (split(':', $cache->{$sequence.':problems'})) { |
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my $problem = $cache->{$problemID.':problem'}; |
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$r->print("<br>$problem"); |
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} |
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} |
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} |
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=pod |
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##777777 |
##777777 |
## $Str .= &Classify($discriminantFactor, $students); |
## $Str .= &Classify($discriminantFactor, $students); |
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|
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if($displayFormat ne 'Display CSV Format') { |
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$r->print('<table border="0"><tr><td bgcolor="#777777">'."\n"); |
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$r->print('<table border="0" cellpadding="3">'."\n"); |
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$r->print(&CreateProblemStatisticsTableHeading($headings, $r)); |
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} else { |
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$r->print('<br>'); |
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} |
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my ($Hid,$pr)=split(/\:/,$mapsort{$_}); |
my $count = 1; |
my @lpr=split(/\&/,$pr); |
foreach(@$orderedProblems) { |
for (my $i=1; $i<=$#lpr; $i++) { |
my ($sequence,$problem,$part)=split(':', $_); |
my %storestats=(); |
if($cache->{'StatisticsMaps'} ne 'All Maps' && |
my ($PrOrd,$Prob,$Tries,$Wrongs,$Code,$Disc)=split(/\&/,$list->[$nIndex]); |
$cache->{'StatisticsMaps'} ne $cache->{$sequence.':title'}) { |
my $Temp = $Prob; |
next; |
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 $ref = '<a href="'.$cache->{$problem.':source'}. |
my $StdDev = 0; |
'" target="_blank">'.$cache->{$problem.':title'}.'</a>'; |
if ( $StdNo > 1 ) { |
# my $ref = $cache->{$problem.':title'}; |
for ( my $n = 0; $n < $StdNo; $n++ ) { |
my $title = $cache->{$problem.':title'}; |
my $Dif = $StdLst[ $n ]-$Average; |
my $source = 'source'; |
$StdDev += $Dif*$Dif; |
my $tableData = join('&', $ref, $title, $source, |
} |
$cache->{$_.':studentCount'}, |
$StdDev /= ( $StdNo - 1 ); |
$cache->{$_.':totalTries'}, |
$StdDev = sqrt( $StdDev ); |
$cache->{$_.':maxTries'}, |
} |
sprintf("%.2f", $cache->{$_.':mean'}), |
|
$cache->{$_.':correct'}, |
#-------------------------------- Compute Degree of Difficulty |
$cache->{$_.':correctByOverride'}, |
my $DoDiff = 0; |
sprintf("%.1f", $cache->{$_.':percentWrong'}), |
if( $TotalTries > 0 ) { |
sprintf("%.2f", $cache->{$_.':degreeOfDifficulty'}), |
$DoDiff = 1 - ( ( $YES + $Override ) / $TotalTries ); |
sprintf("%.1f", $cache->{$_.':standardDeviation'}), |
# $DoDiff = ($TotalTries)/($YES + $Override+ 0.1); |
sprintf("%.1f", $cache->{$_.':skewness'}), |
} |
sprintf("%.2f", $cache->{$_.':discriminationFactor1'}), |
|
sprintf("%.2f", $cache->{$_.':discriminationFactor2'}), |
$storestats{$ENV{'request.course.id'}.'___'.$urlres.'___difficulty'}=$DoDiff; |
0); # 0 is for discussion, need to figure out |
|
|
#-------------------------------- 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)}=$join; |
|
|
|
|
&TableRow($displayFormat,$tableData,$count,$r,$color); |
|
$count++; |
|
} |
|
if($cache->{'DisplayFormat'} ne 'Display CSV Format') { |
|
$r->print('</table>'."\n"); |
|
} |
|
$r->print('</td></tr></table>'); |
#6666666 |
#6666666 |
# $r->print('<br>'.$out.'&'.$DoD); |
# $r->print('<br>'.$out.'&'.$DoD); |
# print (OUT $out.'@'.$DoD.'&'); |
# print (OUT $out.'@'.$DoD.'&'); |
#6666666 |
#6666666 |
|
|
$urlres=~/^(\w+)\/(\w+)/; |
#6666666 |
if ($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 ); |
# close( OUT ); |
#666666 |
#666666 |
|
return; |
} |
} |
=cut |
|
|
|
=pod |
|
sub Cache_Statistics { |
|
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 { |
sub TableRow { |
my ($cache,$Str,$Idx,$RealIdx,$r,$color,$GraphDat)=@_; |
my ($displayFormat,$Str,$RealIdx,$r,$color)=@_; |
my($PrOrd,$Temp,$StdNo,$TotalTries,$MxTries,$Avg,$YES,$Override, |
my($ref,$title,$source,$StdNo,$TotalTries,$MxTries,$Avg,$YES,$Override, |
$Wrng,$DoD,$SD,$Sk,$_D1,$_D2,$DiscNo,$Prob)=split(/\&/,$Str); |
$Wrng,$DoD,$SD,$Sk,$_D1,$_D2,$DiscNo,$Prob)=split(/\&/,$Str); |
if ($ENV{'form.showcsv'}) { |
my $Ptr; |
my ($ResId,$Dummy)=split(/\*/,$Prob); |
if($displayFormat eq 'Display CSV Format') { |
my $Ptr = "\n".'<br>'. |
$Ptr="\n".'<br>'. |
"\n".'"'.($RealIdx+1).'",'. |
"\n".'"'.$RealIdx.'",'. |
"\n".'"'.$cache->{'title_'.$ResId}.$Dummy.'",'. |
"\n".'"'.$title.'",'. |
"\n".'"'.$cache->{'src_'.$ResId}.'",'. |
"\n".'"'.$source.'",'. |
"\n".'"'.$StdNo.'",'. |
"\n".'"'.$StdNo.'",'. |
"\n".'"'.$TotalTries.'",'. |
"\n".'"'.$TotalTries.'",'. |
"\n".'"'.$MxTries.'",'. |
"\n".'"'.$MxTries.'",'. |
"\n".'"'.$Avg.'",'. |
"\n".'"'.$Avg.'",'. |
"\n".'"'.$YES.'",'. |
"\n".'"'.$YES.'",'. |
"\n".'"'.$Override.'",'. |
"\n".'"'.$Override.'",'. |
"\n".'"'.$Wrng.'",'. |
"\n".'"'.$Wrng.'",'. |
"\n".'"'.$DoD.'",'. |
"\n".'"'.$DoD.'",'. |
"\n".'"'.$SD.'",'. |
"\n".'"'.$SD.'",'. |
"\n".'"'.$Sk.'",'. |
"\n".'"'.$Sk.'",'. |
"\n".'"'.$_D1.'",'. |
"\n".'"'.$_D1.'",'. |
"\n".'"'.$_D2.'"'. |
"\n".'"'.$_D2.'"'. |
"\n".'"'.$DiscNo.'"'; |
"\n".'"'.$DiscNo.'"'; |
|
|
$r->print("\n".$Ptr); |
$r->print("\n".$Ptr); |
} |
} else { |
else{ |
$Ptr="\n".'<tr>'. |
my $Ptr = "\n".'<tr>'. |
"\n".'<td bgcolor="#ffffe6">'.$RealIdx.'</td>'. |
"\n".'<td>'.($RealIdx+1).'</td>'. |
"\n".'<td bgcolor="#ffffe6">'.$ref.'</td>'. |
# "\n".'<td>'.$PrOrd.$Temp.'</td>'. |
"\n".'<td bgcolor='.$color->{"yellow"}.'> '.$StdNo.'</td>'. |
"\n".'<td>'.$Temp.'</td>'. |
"\n".'<td bgcolor='.$color->{"yellow"}.'>'.$TotalTries.'</td>'. |
"\n".'<td bgcolor='.$color->{"yellow"}.'> '.$StdNo.'</td>'. |
"\n".'<td bgcolor='.$color->{"yellow"}.'>'.$MxTries.'</td>'. |
"\n".'<td bgcolor='.$color->{"yellow"}.'>'.$TotalTries.'</td>'. |
"\n".'<td bgcolor='.$color->{"gb"}.'>'.$Avg.'</td>'. |
"\n".'<td bgcolor='.$color->{"yellow"}.'>'.$MxTries.'</td>'. |
"\n".'<td bgcolor='.$color->{"gb"}.'> '.$YES.'</td>'. |
"\n".'<td bgcolor='.$color->{"gb"}.'>'.$Avg.'</td>'. |
"\n".'<td bgcolor='.$color->{"gb"}.'> '.$Override.'</td>'. |
"\n".'<td bgcolor='.$color->{"gb"}.'> '.$YES.'</td>'. |
"\n".'<td bgcolor='.$color->{"red"}.'> '.$Wrng.'</td>'. |
"\n".'<td bgcolor='.$color->{"gb"}.'> '.$Override.'</td>'. |
"\n".'<td bgcolor='.$color->{"red"}.'> '.$DoD.'</td>'. |
"\n".'<td bgcolor='.$color->{"red"}.'> '.$Wrng.'</td>'. |
"\n".'<td bgcolor='.$color->{"green"}.'> '.$SD.'</td>'. |
"\n".'<td bgcolor='.$color->{"red"}.'> '.$DoD.'</td>'. |
"\n".'<td bgcolor='.$color->{"green"}.'> '.$Sk.'</td>'. |
"\n".'<td bgcolor='.$color->{"green"}.'> '.$SD.'</td>'. |
"\n".'<td bgcolor='.$color->{"purple"}.'> '.$_D1.'</td>'. |
"\n".'<td bgcolor='.$color->{"green"}.'> '.$Sk.'</td>'. |
"\n".'<td bgcolor='.$color->{"purple"}.'> '.$_D2.'</td>'. |
"\n".'<td bgcolor='.$color->{"purple"}.'> '.$_D1.'</td>'. |
"\n".'<td bgcolor='.$color->{"yellow"}.'> '.$DiscNo.'</td>'; |
"\n".'<td bgcolor='.$color->{"purple"}.'> '.$_D2.'</td>'. |
|
"\n".'<td bgcolor='.$color->{"yellow"}.'> '.$DiscNo.'</td>'; |
|
$r->print("\n".$Ptr.'</tr>' ); |
$r->print("\n".$Ptr.'</tr>' ); |
} |
} |
$GraphDat->{$RealIdx}=$DoD.':'.$Wrng; |
|
} |
|
|
|
sub StatusOptions { |
|
my ($cache)=@_; |
|
|
|
my $Status = $cache->{'Status'}; |
|
my $OpSel1 = ''; |
|
my $OpSel2 = ''; |
|
my $OpSel3 = ''; |
|
|
|
if($Status eq 'Any') { $OpSel3 = ' selected'; } |
return; |
elsif($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 $Ptr; |
|
} |
} |
|
|
sub AscendOrderOptions { |
# For loading the colored table for display or un-colored for print |
my ($order)=@_; |
sub setbgcolor { |
|
my $PrintTable=shift; |
my $OpSel1 = ''; |
my %color; |
my $OpSel2 = ''; |
if ($PrintTable){ |
|
$color{"gb"}="#FFFFFF"; |
if($order eq 'Ascending') { |
$color{"red"}="#FFFFFF"; |
$OpSel1 = ' selected'; |
$color{"yellow"}="#FFFFFF"; |
|
$color{"green"}="#FFFFFF"; |
|
$color{"purple"}="#FFFFFF"; |
} else { |
} else { |
$OpSel2 = ' selected'; |
$color{"gb"}="#DDFFFF"; |
|
$color{"red"}="#FFDDDD"; |
|
$color{"yellow"}="#EEFFCC"; |
|
$color{"green"}="#DDFFDD"; |
|
$color{"purple"}="#FFDDFF"; |
} |
} |
|
|
my $Ptr = ''; |
return \%color; |
$Ptr .= '<tr><td align="right"><b>Sorting Type:</b></td>'."\n"; |
|
$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 $Ptr; |
|
} |
} |
|
|
sub ProblemStatisticsButtons { |
sub ProblemStatisticsButtons { |
my ($displayFormat)=@_; |
my ($displayFormat, $displayLegend)=@_; |
|
|
my $Ptr = '<tr><td></td><td align="left">'; |
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 .= '<input type="submit" name="DoDiffGraph" '; |
$Ptr .= 'value="DoDiff Graph" />'."\n"; |
$Ptr .= 'value="DoDiff Graph" />'."\n"; |
$Ptr .= ' '; |
$Ptr .= ' '; |
$Ptr .= '<input type="submit" name="PercentWrongGraph" '; |
$Ptr .= '<input type="submit" name="PercentWrongGraph" '; |
$Ptr .= 'value="%Wrong Graph" />'."\n"; |
$Ptr .= 'value="%Wrong Graph" />'."\n"; |
|
$Ptr .= '</td></tr><tr><td></td><td>'."\n"; |
|
$Ptr .= '<input type="submit" name="DisplayLegend" '; |
|
if($displayLegend eq 'Show Legend') { |
|
$Ptr .= 'value="Hide Legend" />'."\n"; |
|
} else { |
|
$Ptr .= 'value="Show Legend" />'."\n"; |
|
} |
$Ptr .= ' '; |
$Ptr .= ' '; |
$Ptr .= '<input type="submit" name="DisplayCSVFormat" '; |
$Ptr .= '<input type="submit" name="DisplayCSVFormat" '; |
if($displayFormat eq 'Display CSV Format') { |
if($displayFormat eq 'Display CSV Format') { |
$Ptr .= 'value="Display CSV Format" />'."\n"; |
|
} else { |
|
$Ptr .= 'value="Display Table Format" />'."\n"; |
$Ptr .= 'value="Display Table Format" />'."\n"; |
|
} else { |
|
$Ptr .= 'value="Display CSV Format" />'."\n"; |
} |
} |
$Ptr .= '</td></tr>'; |
$Ptr .= '</td></tr>'; |
|
|
Line 695 sub ProblemStatisticsLegend {
|
Line 418 sub ProblemStatisticsLegend {
|
my $Ptr = ''; |
my $Ptr = ''; |
$Ptr = '<table border="0">'; |
$Ptr = '<table border="0">'; |
$Ptr .= '<tr><td>'; |
$Ptr .= '<tr><td>'; |
$Ptr .= '<b>#Stdnts</b>:</td>'; |
$Ptr .= '<b>#Stdnts</b></td>'; |
$Ptr .= '<td>Total Number of Students opened the problem.'; |
$Ptr .= '<td>Total number of students attempted the problem.'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '<b>Tries</b>:</td>'; |
$Ptr .= '<b>Tries</b></td>'; |
$Ptr .= '<td>Total Number of Tries for solving the problem.'; |
$Ptr .= '<td>Total number of tries for solving the problem.'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '<b>Mod</b>:</td>'; |
$Ptr .= '<b>Mod</b></td>'; |
$Ptr .= '<td>Maximunm Number of Tries for solving the problem.'; |
$Ptr .= '<td>Largest number of tries for solving the problem by a student.'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '<b>Mean</b>:</td>'; |
$Ptr .= '<b>Mean</b></td>'; |
$Ptr .= '<td>Average Number of the tries. [ Tries / #Stdnts ]'; |
$Ptr .= '<td>Average number of tries. [ Tries / #Stdnts ]'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '<b>#YES</b>:</td>'; |
$Ptr .= '<b>#YES</b></td>'; |
$Ptr .= '<td>Number of students solved the problem correctly.'; |
$Ptr .= '<td>Number of students solved the problem correctly.'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '<b>#yes</b>:</td>'; |
$Ptr .= '<b>#yes</b></td>'; |
$Ptr .= '<td>Number of students solved the problem by override.'; |
$Ptr .= '<td>Number of students solved the problem by override.'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '<b>%Wrng</b>:</td>'; |
$Ptr .= '<b>%Wrong</b></td>'; |
$Ptr .= '<td>Percentage of students tried to solve the problem '; |
$Ptr .= '<td>Percentage of students who tried to solve the problem '; |
$Ptr .= 'but still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ]'; |
$Ptr .= 'but is still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ]'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '<b>DoDiff</b>:</td>'; |
$Ptr .= '<b>DoDiff</b></td>'; |
$Ptr .= '<td>Degree of Difficulty of the problem. '; |
$Ptr .= '<td>Degree of Difficulty of the problem. '; |
$Ptr .= '[ 1 - ((#YES+#yes) / Tries) ]'; |
$Ptr .= '[ 1 - ((#YES+#yes) / Tries) ]'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '<b>S.D.</b>:</td>'; |
$Ptr .= '<b>S.D.</b></td>'; |
$Ptr .= '<td>Standard Deviation of the tries. '; |
$Ptr .= '<td>Standard Deviation of the tries. '; |
$Ptr .= '[ sqrt(sum((Xi - Mean)^2)) / (#Stdnts-1) '; |
$Ptr .= '[ sqrt(sum((Xi - Mean)^2)) / (#Stdnts-1) '; |
$Ptr .= 'where Xi denotes every student\'s tries ]'; |
$Ptr .= 'where Xi denotes every student\'s tries ]'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '<b>Skew.</b>:</td>'; |
$Ptr .= '<b>Skew.</b></td>'; |
$Ptr .= '<td>Skewness of the students tries.'; |
$Ptr .= '<td>Skewness of the students tries.'; |
$Ptr .= '[(sqrt( sum((Xi - Mean)^3) / #Stdnts)) / (S.D.^3)]'; |
$Ptr .= '[(sqrt( sum((Xi - Mean)^3) / #Stdnts)) / (S.D.^3)]'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '<b>Dis.F.</b>:</td>'; |
$Ptr .= '<b>Dis.F.</b></td>'; |
$Ptr .= '<td>Discrimination Factor: A Standard for evaluating the '; |
$Ptr .= '<td>Discrimination Factor: A Standard for evaluating the '; |
$Ptr .= 'problem according to a Criterion<br>'; |
$Ptr .= 'problem according to a Criterion<br>'; |
$Ptr .= '<b>[Applied Criterion in %27 Upper Students - '; |
$Ptr .= '<b>[Applied Criterion in %27 Upper Students - '; |
Line 748 sub ProblemStatisticsLegend {
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Line 471 sub ProblemStatisticsLegend {
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} |
} |
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#------- Processing upperlist and lowerlist according to each problem |
#------- Processing upperlist and lowerlist according to each problem |
sub ProcessDiscriminant { |
|
my ($List) = @_; |
sub ExtractStudentData { |
my @sortedList = sort (@$List); |
my ($cache, $students)=@_; |
my $Count = scalar @sortedList; |
|
my $Problem; |
#$Apache::lonxml::debug=1; |
my @Dis; |
#&Apache::lonhomework::showhash(%$cache); |
my $Slvd=0; |
#$Apache::lonxml::debug=0; |
my $tmp; |
|
my $Sum1=0; |
my @problemList=(); |
my $Sum2=0; |
my %problemData; |
my $nIndex=0; |
foreach my $sequence (split(':', $cache->{'orderedSequences'})) { |
my $nStudent=0; |
foreach my $problemID (split(':', $cache->{$sequence.':problems'})) { |
my %Proc=undef; |
foreach my $part (split(/\:/,$cache->{$sequence.':'. |
while ($nIndex<$Count) { |
$problemID. |
($Problem,$tmp)=split(/\=/,$sortedList[$nIndex]); |
':parts'})) { |
@Dis=split(/\+/,$tmp); |
my $id = $sequence.':'.$problemID.':'.$part; |
my $Temp = $Problem; |
push(@problemList, $id); |
do { |
my $totalTries = 0; |
$nIndex++; |
my $totalAwarded = 0; |
$nStudent++; |
my $correct = 0; |
$Sum1 += $Dis[0]; |
my $correctByOverride = 0; |
$Sum2 += $Dis[1]; |
my $studentCount = 0; |
($Problem,$tmp)=split(/\=/,$sortedList[$nIndex]); |
my $maxTries = 0; |
@Dis=split(/\+/,$tmp); |
my $totalFirst = 0; |
} while ( $Problem eq $Temp && $nIndex < $Count ); |
my @studentTries=(); |
# $Proc{$Temp}=($Sum1/$nStudent).':'.$nStudent; |
foreach(@$students) { |
$Proc{$Temp}=($Sum1/$nStudent).':'.($Sum2/$nStudent); |
my $code = $cache->{"$_:$problemID:$part:code"}; |
# $r->print("$nIndex) $Temp --> ($nStudent) $Proc{$Temp} <br>"); |
|
$Sum1=0; |
if(defined($cache->{$_.':error'}) || $code eq ' ' || |
$Sum2=0; |
$cache->{"$_:$problemID:NoVersion"} eq 'true') { |
$nStudent=0; |
next; |
} |
} |
|
|
return %Proc; |
$studentCount++; |
} |
my $tries = $cache->{"$_:$problemID:$part:tries"}; |
|
if($maxTries < $tries) { |
#------- Creating Discimination factor |
$maxTries = $tries; |
sub Discriminant { |
} |
my ($discriminantFactor)=@_; |
$totalTries += $tries; |
my @discriminantKeys=keys(%$discriminantFactor); |
push(@studentTries, $tries); |
my $Count = scalar @discriminantKeys; |
|
|
my $awarded = $cache->{"$_:$problemID:$part:awarded"}; |
my $UpCnt = int(0.27*$Count); |
$totalAwarded += $awarded; |
my $low=0; |
|
my $up=$Count-$UpCnt; |
if($code eq '*') { |
my @UpList=(); |
$correct++; |
my @LowList=(); |
if($tries == 1) { |
|
$totalFirst++; |
$Count=0; |
} |
foreach my $key (sort(@discriminantKeys)) { |
} elsif($code eq '+') { |
$Count++; |
$correctByOverride++; |
if($low < $UpCnt || $Count > $up) { |
} |
$low++; |
|
my $str=$discriminantFactor->{$key}; |
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foreach(split(/\:/,$str)){ |
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if($_) { |
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if($low<$UpCnt) { push(@LowList,$_); } |
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else { push(@UpList,$_); } |
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} |
} |
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|
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$problemData{$id.':sequenceTitle'} = |
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$cache->{$sequence.':title'}; |
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$problemData{$id.':studentCount'} = $studentCount; |
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$problemData{$id.':totalTries'} = $totalTries; |
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$problemData{$id.':studentTries'} = \@studentTries; |
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$problemData{$id.':totalAwarded'} = $totalAwarded; |
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$problemData{$id.':correct'} = $correct; |
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$problemData{$id.':correctByOverride'} = $correctByOverride; |
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$problemData{$id.':wrong'} = $studentCount - |
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($correct + $correctByOverride); |
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$problemData{$id.':maxTries'} = $maxTries; |
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$problemData{$id.':totalFirst'} = $totalFirst; |
} |
} |
} |
} |
} |
} |
my %DisUp = &ProcessDiscriminant(\@UpList); |
|
my %DisLow = &ProcessDiscriminant(\@LowList); |
|
|
|
return (\%DisUp, \%DisLow); |
my @upperStudents1=(); |
} |
my @lowerStudents1=(); |
|
my @upperStudents2=(); |
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my @lowerStudents2=(); |
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my $upperCount = int(0.27*scalar(@$students)); |
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# Discriminant Factor criterion 1 |
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my $sortedStudents = &SortDivideByTries($students,$cache,':totalAwarded'); |
|
|
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for(my $i=0; $i<$upperCount; $i++) { |
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push(@lowerStudents1, $sortedStudents->[$i]); |
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push(@upperStudents1, $sortedStudents->[(scalar(@$students)-$i-1)]); |
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} |
|
|
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$problemData{'studentsUpperListCriterion1'}=join(':::', @upperStudents1); |
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$problemData{'studentsLowerListCriterion1'}=join(':::', @lowerStudents1); |
|
|
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# Discriminant Factor criterion 2 |
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$sortedStudents = &SortDivideByTries($students, $cache, ':totalSolved'); |
|
|
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for(my $i=0; $i<$upperCount; $i++) { |
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push(@lowerStudents2, $sortedStudents->[$i]); |
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push(@upperStudents2, $sortedStudents->[(scalar(@$students)-$i-1)]); |
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} |
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$problemData{'studentsUpperListCriterion2'}=join(':::', @upperStudents2); |
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$problemData{'studentsLowerListCriterion2'}=join(':::', @lowerStudents2); |
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|
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$problemData{'problemList'} = join(':::', @problemList); |
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# $Discussed=0; |
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# if($Discuss->{"$name:$problem"}) { |
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# $TotDiscuss++; |
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# $Discussed=1; |
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# } |
|
|
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return \%problemData; |
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} |
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sub SortDivideByTries { |
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my ($toSort, $data, $sortOn)=@_; |
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my @orderedData = sort { ($data->{$a.':totalTries'}) ? |
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($data->{$a.$sortOn}/$data->{$a.':totalTries'}):0 |
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<=> |
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($data->{$b.':totalTries'}) ? |
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($data->{$b.$sortOn}/$data->{$b.':totalTries'}):0 |
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} @$toSort; |
|
|
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return \@orderedData; |
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} |
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|
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sub SortProblems { |
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my ($problemData,$sortBy,$ascend)=@_; |
|
|
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my @problems = split(':::', $problemData->{'problemList'}); |
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if($sortBy eq "Homework Sets Order") { |
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return \@problems; |
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} |
|
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my $data; |
|
|
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if ($sortBy eq "#Stdnts") { $data = ':studentCount'; } |
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elsif($sortBy eq "Tries") { $data = ':totalTries'; } |
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elsif($sortBy eq "Mod") { $data = ':maxTries'; } |
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elsif($sortBy eq "Mean") { $data = ':mean'; } |
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elsif($sortBy eq "#YES") { $data = ':correct'; } |
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elsif($sortBy eq "#yes") { $data = ':correctByOverride'; } |
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elsif($sortBy eq "%Wrng") { $data = ':percentWrong'; } |
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elsif($sortBy eq "DoDiff") { $data = ':degreeOfDifficulty'; } |
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elsif($sortBy eq "S.D.") { $data = ':standardDeviation'; } |
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elsif($sortBy eq "Skew.") { $data = ':skewness'; } |
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elsif($sortBy eq "D.F.1st") { $data = ':discriminantFactor1'; } |
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elsif($sortBy eq "D.F.2nd") { $data = ':discriminantFactor2'; } |
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elsif($sortBy eq "Disc.") { $data = ''; } |
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else { return \@problems; } |
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|
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my @orderedProblems = |
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sort { $problemData->{$a.$data} <=> $problemData->{$b.$data} } |
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@problems; |
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if($ascend eq 'Descending') { |
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@orderedProblems = reverse(@orderedProblems); |
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} |
|
|
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return \@orderedProblems; |
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} |
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|
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sub CalculateStatistics { |
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my ($data, $cache)=@_; |
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|
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my @problems = split(':::', $data->{'problemList'}); |
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foreach(@problems) { |
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# Mean |
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$data->{$_.':mean'} = ($data->{$_.':studentCount'}) ? |
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($data->{$_.':totalTries'} / $data->{$_.':studentCount'}) : 0; |
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# %Wrong |
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$data->{$_.':percentWrong'} = ($data->{$_.':studentCount'}) ? |
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(($data->{$_.':wrong'} / $data->{$_.':studentCount'}) * 100.0) : |
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100.0; |
|
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# Degree of Difficulty |
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$data->{$_.':degreeOfDifficulty'} = ($data->{$_.':totalTries'}) ? |
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(1 - (($data->{$_.':correct'} + $data->{$_.':correctByOverride'}) / |
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$data->{$_.':totalTries'})) : 0; |
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|
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# Factor in mean |
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my $studentTries = $data->{$_.':studentTries'}; |
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foreach(my $index=0; $index < scalar(@$studentTries); $index++) { |
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$studentTries->[$index] -= $data->{$_.':mean'}; |
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} |
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my $sumSquared = 0; |
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my $sumCubed = 0; |
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foreach(@$studentTries) { |
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my $squared = ($_ * $_); |
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my $cubed = ($squared * $_); |
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$sumSquared += $squared; |
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$sumCubed += $cubed; |
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} |
|
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#---- END Problem Statistics Web Page ---------------------------------------- |
# Standard deviation |
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$data->{$_.':standardDeviation'} = ($data->{$_.':studentCount'} - 1) ? |
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((sqrt($sumSquared)) / ($data->{$_.':studentCount'} - 1)) : 0; |
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# Skewness |
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my $standardDeviation = $data->{$_.':standardDeviation'}; |
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$data->{$_.':skewness'} = ($data->{$_.':standardDeviation'}) ? |
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(((sqrt($sumSquared)) / $data->{$_.':studentCount'}) / |
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($standardDeviation * $standardDeviation * $standardDeviation)) : |
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0; |
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# Discrimination Factor 1 |
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my ($sequence, $problem, $part) = split(':', $_); |
|
|
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my @upper1 = split(':::', $data->{'studentsUpperListCriterion1'}); |
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my @lower1 = split(':::', $data->{'studentsLowerListCriterion1'}); |
|
|
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my $upper1Sum=0; |
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foreach my $name (@upper1) { |
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$upper1Sum += $cache->{"$name:$problem:$part:awarded"}; |
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} |
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$upper1Sum = (scalar(@upper1)) ? ($upper1Sum/(scalar(@upper1))) : 0; |
|
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#---- Problem Statistics Graph Web Page -------------------------------------- |
my $lower1Sum=0; |
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foreach my $name (@lower1) { |
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$lower1Sum += $cache->{"$name:$problem:$part:awarded"}; |
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} |
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$lower1Sum = (scalar(@lower1)) ? ($lower1Sum/(scalar(@lower1))) : 0; |
|
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# ------------------------------------------- Prepare data for Graphical chart |
$data->{$_.':discriminationFactor1'} = $upper1Sum - $lower1Sum; |
|
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sub BuildDiffGraph { |
# Discrimination Factor 2 |
my ($r)=@_; |
my @upper2 = split(':::', $data->{'studentsUpperListCriterion2'}); |
|
my @lower2 = split(':::', $data->{'studentsLowerListCriterion2'}); |
|
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my $graphData = &GetGraphData('DiffGraph', $r); |
my $upper2Sum=0; |
return '<IMG src="/cgi-bin/graph.gif?'.$graphData.'" />'; |
foreach my $name (@upper2) { |
} |
$upper2Sum += $cache->{"$name:$problem:$part:awarded"}; |
|
} |
sub BuildWrongGraph { |
$upper2Sum = (scalar(@upper2)) ? ($upper2Sum/(scalar(@upper2))) : 0; |
my ($r)=@_; |
|
|
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my $graphData = &GetGraphData('WrongGraph', $r); |
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return '<IMG src="/cgi-bin/graph.gif?'.$graphData.'" />'; |
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} |
|
|
|
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my $lower2Sum=0; |
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foreach my $name (@lower2) { |
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$lower2Sum += $cache->{"$name:$problem:$part:awarded"}; |
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} |
|
$lower2Sum = (scalar(@lower2)) ? ($lower2Sum/(scalar(@lower2))) : 0; |
|
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sub GetGraphData { |
$data->{$_.':discriminationFactor2'} = $upper2Sum - $lower2Sum; |
my ($ylab,$r,%GraphDat)=@_; |
|
my $Col; |
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my $data=''; |
|
my $count = 0; |
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my $Max = 0; |
|
my $cid=$ENV{'request.course.id'}; |
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my $GraphDB = "/home/httpd/perl/tmp/$ENV{'user.name'}". |
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"_$ENV{'user.domain'}_$cid\_graph.db"; |
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foreach (keys %GraphDat) {delete $GraphDat{$_};} |
|
if (-e "$GraphDB") { |
|
if (tie(%GraphDat,'GDBM_File',"$GraphDB",&GDBM_READER,0640)) { |
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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"); |
|
} |
|
} |
} |
|
|
|
return; |
} |
} |
|
|
|
#---- END Problem Statistics Web Page ---------------------------------------- |
|
|
1; |
1; |
__END__ |
__END__ |