org.cpsolver.exam.neighbours

Class ExamSimpleNeighbour

java.lang.Object

org.cpsolver.ifs.model.SimpleNeighbour<Exam,ExamPlacement>

org.cpsolver.exam.neighbours.ExamSimpleNeighbour

All Implemented Interfaces:

Neighbour<Exam,ExamPlacement>

public class ExamSimpleNeighbour
extends SimpleNeighbour<Exam,ExamPlacement>

Extension of SimpleNeighbour. The only difference is that the value ( SimpleNeighbour.value(Assignment)) is decreased by 1000 if the selected variable has no current assignment.

Version:

ExamTT 1.3 (Examination Timetabling)
Copyright (C) 2008 - 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

Constructor Summary

Constructors

Constructor and Description
ExamSimpleNeighbour(Assignment<Exam,ExamPlacement> assignment, ExamPlacement placement)

Method Summary

Modifier and Type	Method and Description
void	assign(Assignment<Exam,ExamPlacement> assignment, long iteration) Perform assignment
String	toString()
protected static String	toString(double[] x)
protected static String	toString(double[] x, double[] y)
double	value(Assignment<Exam,ExamPlacement> assignment) Improvement in the solution value if this neighbour is accepted.

Methods inherited from class org.cpsolver.ifs.model.SimpleNeighbour

assignments, getValue, getVariable

Methods inherited from class java.lang.Object

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

Constructor Detail

ExamSimpleNeighbour

public ExamSimpleNeighbour(Assignment<Exam,ExamPlacement> assignment,
                           ExamPlacement placement)

Method Detail

assign

public void assign(Assignment<Exam,ExamPlacement> assignment,
                   long iteration)

Description copied from class: SimpleNeighbour

Perform assignment

Specified by:

assign in interface Neighbour<Exam,ExamPlacement>

Overrides:

assign in class SimpleNeighbour<Exam,ExamPlacement>

Parameters:

assignment - current assignment

iteration - current iteration

toString

protected static String toString(double[] x)

toString

protected static String toString(double[] x,
                                 double[] y)

toString

public String toString()

Overrides:

toString in class SimpleNeighbour<Exam,ExamPlacement>

value

public double value(Assignment<Exam,ExamPlacement> assignment)

Description copied from class: SimpleNeighbour

Improvement in the solution value if this neighbour is accepted.

Specified by:

value in interface Neighbour<Exam,ExamPlacement>

Overrides:

value in class SimpleNeighbour<Exam,ExamPlacement>

Parameters:

assignment - current assignment

Returns:

difference in the solution value when assigned