org.cpsolver.studentsct.extension

Class StudentConflictStatistics

java.lang.Object

org.cpsolver.ifs.extension.Extension<V,T>

org.cpsolver.ifs.extension.ConflictStatistics<Request,Enrollment>

org.cpsolver.studentsct.extension.StudentConflictStatistics

All Implemented Interfaces:

ConstraintListener<Request,Enrollment>, ModelListener<Request,Enrollment>

public class StudentConflictStatistics
extends ConflictStatistics<Request,Enrollment>

Same as ConflictStatistics, however, conflict with real students can be weighted differently than with last-like students.

Parameters:

Related Solver Parameters

Parameter	Type	Comment
StudentConflictStatistics.RealStudentWeight	Double	Weight of a conflict with a real student (Student.isDummy() is false).
StudentConflictStatistics.RealStudentWeight	Double	Weight of a conflict with a last-like student (Student.isDummy() is true).

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

Field Summary

Fields

Modifier and Type	Field and Description
double	iDummyStudentWeight
double	iRealStudentWeight

Constructor Summary

Constructors

Constructor and Description
StudentConflictStatistics(Solver<Request,Enrollment> solver, DataProperties properties)

Method Summary

Modifier and Type	Method and Description
double	countRemovals(long iteration, Enrollment conflictValue, Enrollment value) Counts number of unassignments of the given conflicting value caused by the assignment of the given value.

Methods inherited from class org.cpsolver.ifs.extension.ConflictStatistics

constraintAdded, constraintAfterAssigned, constraintBeforeAssigned, constraintRemoved, countAssignments, countPotentialConflicts, countRemovals, getNoGoods, register, reset, toString, unregister, variableUnassigned

Methods inherited from class org.cpsolver.ifs.extension.Extension

afterAssigned, afterUnassigned, beforeAssigned, beforeUnassigned, getModel, getProperties, getSolver, init, isRegistered, variableAdded, variableRemoved

Methods inherited from class java.lang.Object

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

Field Detail

iRealStudentWeight

public double iRealStudentWeight

iDummyStudentWeight

public double iDummyStudentWeight

Constructor Detail

StudentConflictStatistics

public StudentConflictStatistics(Solver<Request,Enrollment> solver,
                                 DataProperties properties)

Method Detail

countRemovals

public double countRemovals(long iteration,
                            Enrollment conflictValue,
                            Enrollment value)

Description copied from class: ConflictStatistics

Counts number of unassignments of the given conflicting value caused by the assignment of the given value.

Overrides:

countRemovals in class ConflictStatistics<Request,Enrollment>

Parameters:

iteration - current iteration

conflictValue - value conflicting with the given value

value - given value

Returns:

number of unassignments