net.sf.cpsolver.exam.neighbours
Class ExamTimeMove

java.lang.Object
  net.sf.cpsolver.exam.neighbours.ExamTimeMove

All Implemented Interfaces:

NeighbourSelection

public class ExamTimeMove
extends Object
implements NeighbourSelection

A new period is selected for a randomly selected exam. It tries to use the current set of rooms, if it is possible (exam is assigned, rooms are available and not used during the new period). Otherwise, rooms are selected using Exam.findBestAvailableRooms(ExamPeriodPlacement).

Version:

ExamTT 1.1 (Examination Timetabling)
Copyright (C) 2008 Tomáš Müller
muller@unitime.org
Lazenska 391, 76314 Zlin, Czech Republic

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 2.1 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, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

Constructor Summary

ExamTimeMove(DataProperties properties)
Constructor

Method Summary

void	init(Solver solver) Initialization
Neighbour	selectNeighbour(Solution solution) Select an exam randomly, select an available period randomly (if it is not assigned), use rooms if possible, select rooms using Exam.findBestAvailableRooms(ExamPeriodPlacement) if not (exam is unassigned, a room is not available or used).

Methods inherited from class java.lang.Object

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

Constructor Detail

ExamTimeMove

public ExamTimeMove(DataProperties properties)

Constructor

Parameters:

properties - problem properties

Method Detail

init

public void init(Solver solver)

Initialization

Specified by:

init in interface NeighbourSelection

selectNeighbour

public Neighbour selectNeighbour(Solution solution)

Select an exam randomly, select an available period randomly (if it is not assigned), use rooms if possible, select rooms using Exam.findBestAvailableRooms(ExamPeriodPlacement) if not (exam is unassigned, a room is not available or used).

Specified by:

selectNeighbour in interface NeighbourSelection

Parameters:

solution - given solution

Returns:

a neighbour assignment