net.sf.cpsolver.exam.criteria
Class RoomPerturbationPenalty

java.lang.Object
  extended by net.sf.cpsolver.ifs.criteria.AbstractCriterion<Exam,ExamPlacement>
      extended by net.sf.cpsolver.exam.criteria.ExamCriterion
          extended by net.sf.cpsolver.exam.criteria.PerturbationPenalty
              extended by net.sf.cpsolver.exam.criteria.RoomPerturbationPenalty
All Implemented Interfaces:
Criterion<Exam,ExamPlacement>, InfoProvider<Exam>, ModelListener<Exam,ExamPlacement>

public class RoomPerturbationPenalty
extends PerturbationPenalty

Room perturbation penalty. I.e., number of assigned rooms different from initial. Only applicable when PerturbationPenalty.isMPP() is true (minimal perturbation problem).

A weight of room perturbations (i.e., a penalty for an assignment of an exam to a room different from the initial one) can be set by problem property Exams.RoomPerturbationWeight, or in the input xml file, property roomPerturbationWeight).

Version:
ExamTT 1.2 (Examination Timetabling)
Copyright (C) 2008 - 2012 Tomas Muller
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 net.sf.cpsolver.ifs.criteria.AbstractCriterion
AbstractCriterion.ValueUpdateType
 
Field Summary
 
Fields inherited from class net.sf.cpsolver.ifs.criteria.AbstractCriterion
iBest, iDebug, iValue, iValueUpdateType, iWeight, sDoubleFormat, sPercentFormat
 
Constructor Summary
RoomPerturbationPenalty()
           
 
Method Summary
 double getValue(ExamPlacement value, Set<ExamPlacement> conflicts)
          Value of a proposed assignment (including hard conflicts)
 double getWeightDefault(DataProperties config)
          Defines default weight (when AbstractCriterion.getWeightName() parameter is not present in the criterion).
 String getWeightName()
          Defines weight name (to be used to get the criterion weight from the configuration).
 String getXmlWeightName()
          Name of the weight parameter in the parameters section of the examination XML file.
 boolean isPeriodCriterion()
          True if this criterion is based on period assignment.
 String toString()
           
 
Methods inherited from class net.sf.cpsolver.exam.criteria.PerturbationPenalty
getXmlParameters, init, isMPP, setXmlParameters
 
Methods inherited from class net.sf.cpsolver.exam.criteria.ExamCriterion
getBounds, getInfo, getPeriodValue, getRoomValue, isRoomCriterion, setWeight
 
Methods inherited from class net.sf.cpsolver.ifs.criteria.AbstractCriterion
afterAssigned, afterUnassigned, beforeAssigned, beforeUnassigned, bestRestored, bestSaved, clearCache, computeBounds, constraintAdded, constraintRemoved, getBest, getBounds, getInfo, getModel, getName, getPerc, getPercRev, getValue, getValue, getWeight, getWeightedBest, getWeightedValue, getWeightedValue, getWeightedValue, inc, variableAdded, variableRemoved
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

RoomPerturbationPenalty

public RoomPerturbationPenalty()
Method Detail

getWeightName

public String getWeightName()
Description copied from class: AbstractCriterion
Defines weight name (to be used to get the criterion weight from the configuration).

Overrides:
getWeightName in class PerturbationPenalty

getXmlWeightName

public String getXmlWeightName()
Description copied from class: ExamCriterion
Name of the weight parameter in the parameters section of the examination XML file.

Overrides:
getXmlWeightName in class PerturbationPenalty

getWeightDefault

public double getWeightDefault(DataProperties config)
Description copied from class: AbstractCriterion
Defines default weight (when AbstractCriterion.getWeightName() parameter is not present in the criterion).

Overrides:
getWeightDefault in class PerturbationPenalty

getValue

public double getValue(ExamPlacement value,
                       Set<ExamPlacement> conflicts)
Description copied from interface: Criterion
Value of a proposed assignment (including hard conflicts)

Specified by:
getValue in interface Criterion<Exam,ExamPlacement>
Overrides:
getValue in class PerturbationPenalty

toString

public String toString()
Overrides:
toString in class PerturbationPenalty

isPeriodCriterion

public boolean isPeriodCriterion()
Description copied from class: ExamCriterion
True if this criterion is based on period assignment. Used by ExamPlacement.getTimeCost().

Overrides:
isPeriodCriterion in class ExamCriterion


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