use of org.cpsolver.exam.model.ExamRoomPlacement in project cpsolver by UniTime.
the class ExamAssignments method report.
/**
* generate report
* @param assignment current assignment
* @return resultant report
*/
public CSVFile report(Assignment<Exam, ExamPlacement> assignment) {
CSVFile csv = new CSVFile();
csv.setHeader(new CSVField[] { new CSVField("Exam"), new CSVField("Enrl"), new CSVField("Alt"), new CSVField("Period"), new CSVField("Date"), new CSVField("Time"), new CSVField("Room"), new CSVField("Cap") });
for (Exam exam : iModel.variables()) {
ExamPlacement placement = assignment.getValue(exam);
ArrayList<CSVField> fields = new ArrayList<CSVField>();
fields.add(new CSVField(exam.getName()));
fields.add(new CSVField(exam.getStudents().size()));
fields.add(new CSVField(exam.hasAltSeating() ? "Yes" : "No"));
if (placement == null) {
fields.add(new CSVField(""));
fields.add(new CSVField(""));
fields.add(new CSVField(""));
fields.add(new CSVField(""));
fields.add(new CSVField(""));
} else {
fields.add(new CSVField(placement.getPeriod().getIndex() + 1));
fields.add(new CSVField(placement.getPeriod().getDayStr()));
fields.add(new CSVField(placement.getPeriod().getTimeStr()));
String rooms = "";
String roomSizes = "";
for (Iterator<ExamRoomPlacement> i = placement.getRoomPlacements().iterator(); i.hasNext(); ) {
ExamRoomPlacement room = i.next();
rooms += room.getRoom().getName();
roomSizes += room.getSize(exam.hasAltSeating());
if (i.hasNext()) {
rooms += ", ";
roomSizes += ", ";
}
}
fields.add(new CSVField(rooms));
fields.add(new CSVField(roomSizes));
}
csv.addLine(fields);
}
return csv;
}
use of org.cpsolver.exam.model.ExamRoomPlacement in project cpsolver by UniTime.
the class ExamCourseSectionAssignments method report.
/**
* generate report
* @param assignment current assignment
* @return resultant report
*/
public CSVFile report(Assignment<Exam, ExamPlacement> assignment) {
CSVFile csv = new CSVFile();
csv.setHeader(new CSVField[] { new CSVField("Section/Course"), new CSVField("Enrl"), new CSVField("Alt"), new CSVField("Period"), new CSVField("Date"), new CSVField("Time"), new CSVField("Room"), new CSVField("Cap") });
for (Exam exam : iModel.variables()) {
ExamPlacement placement = assignment.getValue(exam);
for (ExamOwner owner : exam.getOwners()) {
List<CSVField> fields = new ArrayList<CSVField>();
fields.add(new CSVField(owner.getName()));
fields.add(new CSVField(owner.getStudents().size()));
fields.add(new CSVField(exam.hasAltSeating() ? "Yes" : "No"));
if (placement == null) {
fields.add(new CSVField(""));
fields.add(new CSVField(""));
fields.add(new CSVField(""));
fields.add(new CSVField(""));
fields.add(new CSVField(""));
} else {
fields.add(new CSVField(placement.getPeriod().getIndex() + 1));
fields.add(new CSVField(placement.getPeriod().getDayStr()));
fields.add(new CSVField(placement.getPeriod().getTimeStr()));
String rooms = "";
String roomSizes = "";
for (Iterator<ExamRoomPlacement> i = placement.getRoomPlacements().iterator(); i.hasNext(); ) {
ExamRoomPlacement room = i.next();
rooms += room.getName();
roomSizes += room.getSize(exam.hasAltSeating());
if (i.hasNext()) {
rooms += ", ";
roomSizes += ", ";
}
}
fields.add(new CSVField(rooms));
fields.add(new CSVField(roomSizes));
}
csv.addLine(fields);
}
}
return csv;
}
use of org.cpsolver.exam.model.ExamRoomPlacement in project cpsolver by UniTime.
the class ExamRoomMove method selectNeighbour.
/**
* Select an exam randomly, select an available period randomly (if it is
* not assigned, from {@link Exam#getPeriodPlacements()}), select rooms
* using {@link Exam#findRoomsRandom(Assignment, ExamPeriodPlacement)}
*/
@Override
public Neighbour<Exam, ExamPlacement> selectNeighbour(Solution<Exam, ExamPlacement> solution) {
ExamModel model = (ExamModel) solution.getModel();
Assignment<Exam, ExamPlacement> assignment = solution.getAssignment();
Exam exam = ToolBox.random(model.variables());
if (exam.getMaxRooms() <= 0)
return null;
ExamPlacement placement = assignment.getValue(exam);
ExamPeriodPlacement period = (placement != null ? placement.getPeriodPlacement() : (ExamPeriodPlacement) ToolBox.random(exam.getPeriodPlacements()));
if (iCheckStudentConflicts && placement == null && exam.countStudentConflicts(assignment, period) > 0)
return null;
if (iCheckDistributionConstraints && placement == null && !exam.checkDistributionConstraints(assignment, period))
return null;
Set<ExamRoomPlacement> rooms = (placement != null ? placement.getRoomPlacements() : exam.findBestAvailableRooms(assignment, period));
if (rooms == null || rooms.isEmpty())
return null;
if (placement == null)
placement = new ExamPlacement(exam, period, rooms);
List<ExamRoomPlacement> roomVect = new ArrayList<ExamRoomPlacement>(rooms);
int rx = ToolBox.random(roomVect.size());
for (int r = 0; r < roomVect.size(); r++) {
ExamRoomPlacement current = roomVect.get((r + rx) % roomVect.size());
int mx = ToolBox.random(exam.getRoomPlacements().size());
for (int m = 0; m < exam.getRoomPlacements().size(); m++) {
ExamRoomPlacement swap = exam.getRoomPlacements().get((m + mx) % exam.getRoomPlacements().size());
ExamRoomSwapNeighbour n = new ExamRoomSwapNeighbour(assignment, placement, current, swap);
if (n.canDo())
return n;
}
}
rooms = exam.findRoomsRandom(assignment, period);
if (rooms == null)
return null;
return new ExamSimpleNeighbour(assignment, new ExamPlacement(exam, period, rooms));
}
use of org.cpsolver.exam.model.ExamRoomPlacement in project cpsolver by UniTime.
the class ExamTabuSearch method selectValue.
/**
* Value selection
*/
@Override
public ExamPlacement selectValue(Solution<Exam, ExamPlacement> solution, Exam exam) {
if (iFirstIteration < 0)
iFirstIteration = solution.getIteration();
TabuList tabu = getContext(solution.getAssignment());
long idle = solution.getIteration() - Math.max(iFirstIteration, solution.getBestIteration());
if (idle > iMaxIdleIterations) {
sLog.debug(" [tabu] max idle iterations reached");
iFirstIteration = -1;
if (tabu.size() > 0)
tabu.clear();
return null;
}
if (tabu.size() > 0 && iTabuMaxSize > iTabuMinSize) {
if (idle == 0) {
tabu.resize(iTabuMinSize);
} else if (idle % (iMaxIdleIterations / (iTabuMaxSize - iTabuMinSize)) == 0) {
tabu.resize(Math.min(iTabuMaxSize, tabu.size() + 1));
}
}
ExamModel model = (ExamModel) solution.getModel();
Assignment<Exam, ExamPlacement> assignment = solution.getAssignment();
double bestEval = 0.0;
List<ExamPlacement> best = null;
ExamPlacement assigned = assignment.getValue(exam);
// double assignedVal =
// (assigned==null?-iConflictWeight:iValueWeight*assigned.toDouble());
double assignedVal = (assigned == null ? iConflictWeight : iValueWeight * assigned.toDouble(assignment));
for (ExamPeriodPlacement period : exam.getPeriodPlacements()) {
Set<ExamRoomPlacement> rooms = exam.findBestAvailableRooms(assignment, period);
if (rooms == null)
rooms = exam.findRoomsRandom(assignment, period, false);
if (rooms == null) {
sLog.info("Exam " + exam.getName() + " has no rooms for period " + period);
continue;
}
ExamPlacement value = new ExamPlacement(exam, period, rooms);
if (value.equals(assigned))
continue;
Set<ExamPlacement> conflicts = model.conflictValues(assignment, value);
double eval = iValueWeight * value.toDouble(assignment) - assignedVal;
for (ExamPlacement conflict : conflicts) {
eval -= iValueWeight * conflict.toDouble(assignment);
eval += iConflictWeight * (1.0 + (iStat == null ? 0.0 : iStat.countRemovals(solution.getIteration(), conflict, value)));
}
if (tabu.size() > 0 && tabu.contains(exam.getId() + ":" + value.getPeriod().getIndex())) {
int un = model.variables().size() - assignment.nrAssignedVariables() - (assigned == null ? 0 : 1);
if (un > model.getBestUnassignedVariables())
continue;
if (un == model.getBestUnassignedVariables() && model.getTotalValue(assignment) + eval >= solution.getBestValue())
continue;
}
if (best == null || bestEval > eval) {
if (best == null)
best = new ArrayList<ExamPlacement>();
else
best.clear();
best.add(value);
bestEval = eval;
} else if (bestEval == eval) {
best.add(value);
}
}
if (best == null)
return null;
ExamPlacement bestVal = ToolBox.random(best);
if (sLog.isDebugEnabled()) {
Set<ExamPlacement> conflicts = model.conflictValues(assignment, bestVal);
double wconf = (iStat == null ? 0.0 : iStat.countRemovals(solution.getIteration(), conflicts, bestVal));
sLog.debug(" [tabu] " + bestVal + " (" + (assignment.getValue(bestVal.variable()) == null ? "" : "was=" + assignment.getValue(bestVal.variable()) + ", ") + "val=" + bestEval + (conflicts.isEmpty() ? "" : ", conf=" + (wconf + conflicts.size()) + "/" + conflicts) + ")");
}
if (tabu.size() > 0)
tabu.add(exam.getId() + ":" + bestVal.getPeriod().getIndex());
return bestVal;
}
use of org.cpsolver.exam.model.ExamRoomPlacement in project cpsolver by UniTime.
the class ExamPeriodSwapMove method selectNeighbour.
/**
* Select an exam randomly,
* select an available period randomly (if it is not assigned),
* use rooms if possible, select rooms using {@link Exam#findBestAvailableRooms(Assignment, ExamPeriodPlacement)} if not (exam is unassigned, a room is not available or used).
*/
@Override
public Neighbour<Exam, ExamPlacement> selectNeighbour(Solution<Exam, ExamPlacement> solution) {
ExamModel model = (ExamModel) solution.getModel();
Assignment<Exam, ExamPlacement> assignment = solution.getAssignment();
Exam x1 = ToolBox.random(model.variables());
ExamPlacement v1 = assignment.getValue(x1);
if (v1 == null)
return null;
int x = ToolBox.random(model.variables().size());
for (int v = 0; v < model.variables().size(); v++) {
Exam x2 = model.variables().get((v + x) % (model.variables().size()));
ExamPlacement v2 = assignment.getValue(x2);
if (x1.equals(x2) || v2 == null)
continue;
ExamPeriodPlacement p1 = x1.getPeriodPlacement(v2.getPeriod());
ExamPeriodPlacement p2 = x2.getPeriodPlacement(v1.getPeriod());
if (p1 == null || p2 == null)
continue;
if (iCheckStudentConflicts && (x1.countStudentConflicts(assignment, p1) > 0 || x2.countStudentConflicts(assignment, p2) > 0))
continue;
if (iCheckDistributionConstraints) {
Map<Exam, ExamPlacement> placements = new HashMap<Exam, ExamPlacement>();
placements.put(x1, new ExamPlacement(x1, p1, new HashSet<ExamRoomPlacement>()));
placements.put(x2, new ExamPlacement(x2, p2, new HashSet<ExamRoomPlacement>()));
if (!checkDistributionConstraints(assignment, x1, p1, placements) || !checkDistributionConstraints(assignment, x2, p2, placements))
continue;
}
Set<ExamPlacement> conflicts = new HashSet<ExamPlacement>();
conflicts.add(v1);
conflicts.add(v2);
Map<Exam, ExamPlacement> placements = new HashMap<Exam, ExamPlacement>();
Set<ExamRoomPlacement> r1 = findBestAvailableRooms(assignment, x1, p1, conflicts, placements);
if (r1 == null)
continue;
placements.put(x1, new ExamPlacement(x1, p1, r1));
Set<ExamRoomPlacement> r2 = findBestAvailableRooms(assignment, x2, p2, conflicts, placements);
if (r2 == null)
continue;
return new LazySwap<Exam, ExamPlacement>(new ExamPlacement(x1, p1, r1), new ExamPlacement(x2, p2, r2));
}
return null;
}
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