org.cpsolver.studentsct.heuristics.selection

Class ResectionUnassignedStudentsSelection

java.lang.Object

org.cpsolver.studentsct.heuristics.selection.BranchBoundSelection

org.cpsolver.studentsct.heuristics.selection.ResectionUnassignedStudentsSelection

All Implemented Interfaces:

NeighbourSelection<Request,Enrollment>, InfoProvider<Request,Enrollment>, SolverListener<Request,Enrollment>

public class ResectionUnassignedStudentsSelection
extends BranchBoundSelection

Resection studends with empty schedule. An extension of BranchBoundSelection, where only students that have no enrollments ( Student.nrAssignedRequests(Assignment) is zero) are resectioned.

Version:

StudentSct 1.3 (Student Sectioning)
Copyright (C) 2007 - 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/.

Author:

Tomáš Müller

Nested Class Summary

Nested classes/interfaces inherited from class org.cpsolver.studentsct.heuristics.selection.BranchBoundSelection

BranchBoundSelection.BranchBoundNeighbour, BranchBoundSelection.Selection

Field Summary

Fields inherited from class org.cpsolver.studentsct.heuristics.selection.BranchBoundSelection

iBranchWhenSelectedHasNoConflict, iDistanceConflict, iDistConfWeight, iFilter, iMinimizePenalty, iModel, iNbrIterations, iNbrNoSolution, iNbrStudents, iNbrTimeoutReached, iOrder, iStudentQuality, iStudents, iTimeout, iTimeOverlaps, iTimesToAvoidHeuristics, iTotalTime, sDebug

Constructor Summary

Constructors

Constructor and Description
ResectionUnassignedStudentsSelection(DataProperties properties)

Method Summary

Modifier and Type	Method and Description
void	init(Solver<Request,Enrollment> solver) Criterion initialization
Neighbour<Request,Enrollment>	selectNeighbour(Solution<Request,Enrollment> solution) Select neighbour.

Methods inherited from class org.cpsolver.studentsct.heuristics.selection.BranchBoundSelection

addStudent, getFilter, getInfo, getInfo, getSelection, init, neighbourFailed, neighbourSelected, nextStudent, setModel, valueSelected, variableSelected, withFilter

Methods inherited from class java.lang.Object

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

Constructor Detail

ResectionUnassignedStudentsSelection

public ResectionUnassignedStudentsSelection(DataProperties properties)

Method Detail

init

public void init(Solver<Request,Enrollment> solver)

Description copied from interface: NeighbourSelection

Criterion initialization

Specified by:

init in interface NeighbourSelection<Request,Enrollment>

Overrides:

init in class BranchBoundSelection

Parameters:

solver - current solver

selectNeighbour

public Neighbour<Request,Enrollment> selectNeighbour(Solution<Request,Enrollment> solution)

Select neighbour. All students with an empty schedule are taken, one by one in a random order. For each student a branch & bound search is employed.

Specified by:

selectNeighbour in interface NeighbourSelection<Request,Enrollment>

Overrides:

selectNeighbour in class BranchBoundSelection

Parameters:

solution - given solution

Returns:

a neighbour assignment