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Fixed comparison of assessments for error banded and criterion grading.

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This commit is contained in:
rkingdon 2004-08-20 09:08:33 +00:00
parent f355b8ddb3
commit 9e6f39a42a
3 changed files with 35 additions and 13 deletions
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2
mod/exercise/assessments.php
View File

@ -377,7 +377,7 @@
break;
case 3: // criterion grading
for ($j = 100; $j >= 0; $j--) {
for ($j = $exercise->grade; $j >= 0; $j--) {
$numbers[$j] = $j;
}
for ($i=0; $i<$exercise->nelements; $i++) {

41
mod/exercise/locallib.php
View File

@ -115,11 +115,30 @@ function exercise_compare_assessments($exercise, $assessment1, $assessment2) {
}
$sumdiffs = 0;
$sumweights = 0;
for ($i=0; $i < $exercise->nelements; $i++) {
$diff = ($grades[0][$i] - $grades[1][$i]) * $weight[$i] / $maxscore[$i];
$sumdiffs += $diff * $diff; // use squared distances
$sumweights += $weight[$i];
}
switch ($exercise->gradingstrategy) {
case 1 : // accumulative grading and...
case 4 : // ...rubic grading
for ($i=0; $i < $exercise->nelements; $i++) {
$diff = ($grades[0][$i] - $grades[1][$i]) * $weight[$i] / $maxscore[$i];
$sumdiffs += $diff * $diff; // use squared distances
$sumweights += $weight[$i];
}
break;
case 2 : // error banded grading
// ignore maxscores here, the grades are either 0 or 1,
for ($i=0; $i < $exercise->nelements; $i++) {
$diff = ($grades[0][$i] - $grades[1][$i]) * $weight[$i];
$sumdiffs += $diff * $diff; // use squared distances
$sumweights += $weight[$i];
}
break;
case 3 : // criterion grading
// here we only need to look at the difference between the "zero" grade elements
$diff = ($grades[0][0] - $grades[1][0]) / (count($elementsraw) - 1);
$sumdiffs = $diff * $diff;
$sumweights = 1;
break;
}
// convert to a sensible grade (always out of 100)
$COMP = (object)$EXERCISE_ASSESSMENT_COMPS[$exercise->assessmentcomps];
$factor = $COMP->value;
@ -1852,7 +1871,7 @@ function exercise_print_assessment_form($exercise, $assessment = false, $allowch
.number_format($EXERCISE_EWEIGHTS[$elements[$i]->weight], 2)."</font></TD></tr>\n";
echo "<TR valign=\"top\">\n";
echo " <TD BGCOLOR=\"$THEME->cellheading2\" align=\"center\"><B>".get_string("select", "exercise")."</B></TD>\n";
echo " <TD BGCOLOR=\"$THEME->cellheading2\" align=\"center\"><B>".get_string("select")."</B></TD>\n";
echo " <TD BGCOLOR=\"$THEME->cellheading2\"><B>". get_string("criterion","exercise")."</B></TD></tr>\n";
if (isset($grades[$i])) {
@ -2320,7 +2339,7 @@ function exercise_print_teacher_assessment_form($exercise, $assessment, $submiss
<?PHP
// now print a normal assessment form based on the student's assessment for this submission
// and allow the teacher to grade and add comments
// and allow the teacher to grade and add additional comments
$studentassessment = $assessment;
$allowchanges = true;
@ -2329,8 +2348,8 @@ function exercise_print_teacher_assessment_form($exercise, $assessment, $submiss
// is there an existing assessment for the submission
if (!$assessment = exercise_get_submission_assessment($submission, $USER)) {
// copy student's assessment without the comments for the student's submission
$assessment = exercise_copy_assessment($studentassessment, $submission);
// copy student's assessment with their comments for the teacher's assessment
$assessment = exercise_copy_assessment($studentassessment, $submission, true);
}
// only show the grade if grading strategy > 0 and the grade is positive
@ -2591,7 +2610,7 @@ function exercise_print_teacher_assessment_form($exercise, $assessment, $submiss
echo "<TR valign=top>\n";
echo " <TD BGCOLOR=\"$THEME->cellheading2\">&nbsp;</TD>\n";
echo " <TD BGCOLOR=\"$THEME->cellheading2\"><B>". get_string("criterion","exercise")."</B></TD>\n";
echo " <TD BGCOLOR=\"$THEME->cellheading2\"><B>".get_string("select", "exercise")."</B></TD>\n";
echo " <TD BGCOLOR=\"$THEME->cellheading2\"><B>".get_string("select")."</B></TD>\n";
echo " <TD BGCOLOR=\"$THEME->cellheading2\"><B>".get_string("suggestedgrade", "exercise")."</B></TD>\n";
// find which criteria has been selected (saved in the zero element), if any
if (isset($grades[0]->grade)) {
@ -2639,7 +2658,7 @@ function exercise_print_teacher_assessment_form($exercise, $assessment, $submiss
"<P align=\"right\"><font size=\"1\">Weight: "
.number_format($EXERCISE_EWEIGHTS[$elements[$i]->weight], 2)."</font></TD></tr>\n";
echo "<TR valign=\"top\">\n";
echo " <TD BGCOLOR=\"$THEME->cellheading2\" align=\"center\"><B>".get_string("select", "exercise")."</B></TD>\n";
echo " <TD BGCOLOR=\"$THEME->cellheading2\" align=\"center\"><B>".get_string("select")."</B></TD>\n";
echo " <TD BGCOLOR=\"$THEME->cellheading2\"><B>". get_string("criterion","exercise")."</B></TD></tr>\n";
if (isset($grades[$i])) {
$selection = $grades[$i]->grade;

5
mod/exercise/view.php
View File

@ -164,7 +164,10 @@
if (exercise_count_teacher_submissions($exercise) == 0) {
redirect("view.php?id=$cm->id", get_string("noexercisedescriptionssubmitted", "exercise"));
}
else {
elseif (($exercise->gradingstrategy == 3) and ($exercise->nelements ==1 )) {
// only one criterion specified
redirect("view.php?id=$cm->id", get_string("numberofcriterionelements", "exercise"));
} else {
set_field("exercise", "phase", 2, "id", "$exercise->id");
add_to_log($course->id, "exercise", "open", "view.php?id=$cm->id", "$exercise->id", $cm->id);
redirect("view.php?id=$cm->id", get_string("movingtophase", "exercise", 2));