org.cpsolver.studentsct.online.selection

Class EqualWeightCriterion

java.lang.Object

org.cpsolver.studentsct.online.selection.OnlineSectioningCriterion

org.cpsolver.studentsct.online.selection.EqualWeightCriterion

All Implemented Interfaces:

MultiCriteriaBranchAndBoundSelection.SelectionComparator, MultiCriteriaBranchAndBoundSelection.SelectionCriterion

public class EqualWeightCriterion
extends OnlineSectioningCriterion

Equal weighting multi-criteria selection criterion. Much like the OnlineSectioningCriterion, but course request priorities are ignored. Most complete solution is preferred instead.

Version:

StudentSct 1.3 (Student Sectioning)
Copyright (C) 2014 Tomáš Müller
muller@unitime.org
http://muller.unitime.org

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not see http://www.gnu.org/licenses.

Nested Class Summary

Nested classes/interfaces inherited from class org.cpsolver.studentsct.online.selection.OnlineSectioningCriterion

OnlineSectioningCriterion.TimeToAvoid

Field Summary

Fields inherited from class org.cpsolver.studentsct.online.selection.OnlineSectioningCriterion

iQalityWeights

Constructor Summary

Constructors

Constructor and Description
EqualWeightCriterion(Student student, OnlineSectioningModel model, Assignment<Request,Enrollment> assignment, Hashtable<CourseRequest,Set<Section>> preferredSections)

Method Summary

Modifier and Type	Method and Description
boolean	canImprove(Assignment<Request,Enrollment> assignment, int maxIdx, Enrollment[] current, Enrollment[] best) Bound
int	compare(Assignment<Request,Enrollment> assignment, Enrollment[] current, Enrollment[] best) Compare two solutions

Methods inherited from class org.cpsolver.studentsct.online.selection.OnlineSectioningCriterion

compare, getDistanceConflicts, getModel, getPreferredSections, getRequest, getStudent, getStudentQualityConflicts, getTimeOverlappingConflicts, getTimesToAvoid, getTotalWeight, getWeight, getWeight, isFreeTime

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

EqualWeightCriterion

public EqualWeightCriterion(Student student,
                            OnlineSectioningModel model,
                            Assignment<Request,Enrollment> assignment,
                            Hashtable<CourseRequest,Set<Section>> preferredSections)

Method Detail

compare

public int compare(Assignment<Request,Enrollment> assignment,
                   Enrollment[] current,
                   Enrollment[] best)

Description copied from interface: MultiCriteriaBranchAndBoundSelection.SelectionCriterion

Compare two solutions

Specified by:

compare in interface MultiCriteriaBranchAndBoundSelection.SelectionCriterion

Overrides:

compare in class OnlineSectioningCriterion

Parameters:

assignment - current assignment

current - current solution

best - best known solution

Returns:

true if current solution is better than the best one

canImprove

public boolean canImprove(Assignment<Request,Enrollment> assignment,
                          int maxIdx,
                          Enrollment[] current,
                          Enrollment[] best)

Description copied from interface: MultiCriteriaBranchAndBoundSelection.SelectionCriterion

Bound

Specified by:

canImprove in interface MultiCriteriaBranchAndBoundSelection.SelectionCriterion

Overrides:

canImprove in class OnlineSectioningCriterion

Parameters:

assignment - current assignment

maxIdx - current request index

current - current solution

best - best known solution

Returns:

if the current solution can be extended and possibly improve upon the best known solution