Examples with Exam org.cpsolver.exam.model.Exam used on opensource projects

Example 61 with Exam

use of org.cpsolver.exam.model.Exam in project cpsolver by UniTime.

the class ExamCriterion method getBounds.

@Override
public double[] getBounds(Assignment<Exam, ExamPlacement> assignment, Collection<Exam> exams) {
    double[] bounds = new double[] { 0.0, 0.0 };
    for (Exam exam : exams) {
        Double min = null, max = null;
        for (ExamPeriodPlacement period : exam.getPeriodPlacements()) {
            if (exam.getMaxRooms() == 0) {
                double value = getValue(assignment, new ExamPlacement(exam, period, null), null);
                if (min == null) {
                    min = value;
                    max = value;
                    continue;
                }
                min = Math.min(min, value);
                max = Math.max(max, value);
            } else {
                for (ExamRoomPlacement room : exam.getRoomPlacements()) {
                    Set<ExamRoomPlacement> rooms = new HashSet<ExamRoomPlacement>();
                    rooms.add(room);
                    double value = getValue(assignment, new ExamPlacement(exam, period, rooms), null);
                    if (min == null) {
                        min = value;
                        max = value;
                        continue;
                    }
                    min = Math.min(min, value);
                    max = Math.max(max, value);
                }
            }
        }
        if (min != null) {
            bounds[0] += min;
            bounds[1] += max;
        }
    }
    return bounds;
}

Example 62 with Exam

use of org.cpsolver.exam.model.Exam in project cpsolver by UniTime.

the class InstructorBackToBackConflicts method getValue.

@Override
public double getValue(Assignment<Exam, ExamPlacement> assignment, ExamPlacement value, Set<ExamPlacement> conflicts) {
    Exam exam = value.variable();
    int penalty = 0;
    ExamPeriod period = value.getPeriod();
    Map<ExamInstructor, Set<Exam>> prev = (period.prev() != null && (isDayBreakBackToBack() || period.prev().getDay() == period.getDay()) ? ((ExamModel) getModel()).getInstructorsOfPeriod(assignment, period.prev()) : null);
    Map<ExamInstructor, Set<Exam>> next = (period.next() != null && (isDayBreakBackToBack() || period.next().getDay() == period.getDay()) ? ((ExamModel) getModel()).getInstructorsOfPeriod(assignment, period.next()) : null);
    for (ExamInstructor s : exam.getInstructors()) {
        if (prev != null) {
            Set<Exam> exams = prev.get(s);
            if (exams != null) {
                int nrExams = exams.size() + (exams.contains(exam) ? -1 : 0);
                penalty += nrExams;
            }
        }
        if (next != null) {
            Set<Exam> exams = next.get(s);
            if (exams != null) {
                int nrExams = exams.size() + (exams.contains(exam) ? -1 : 0);
                penalty += nrExams;
            }
        }
    }
    /*
        for (ExamInstructor s : exam.getInstructors()) {
            if (period.prev() != null) {
                if (isDayBreakBackToBack() || period.prev().getDay() == period.getDay()) {
                    Set<Exam> exams = s.getExams(assignment, period.prev());
                    int nrExams = exams.size() + (exams.contains(exam) ? -1 : 0);
                    penalty += nrExams;
                }
            }
            if (period.next() != null) {
                if (isDayBreakBackToBack() || period.next().getDay() == period.getDay()) {
                    Set<Exam> exams = s.getExams(assignment, period.next());
                    int nrExams = exams.size() + (exams.contains(exam) ? -1 : 0);
                    penalty += nrExams;
                }
            }
        }
        */
    return penalty;
}