net.sf.cpsolver.coursett.criteria.placement
Class WeightedHardConflicts

java.lang.Object
  extended by net.sf.cpsolver.ifs.criteria.AbstractCriterion<Lecture,Placement>
      extended by net.sf.cpsolver.coursett.criteria.TimetablingCriterion
          extended by net.sf.cpsolver.coursett.criteria.placement.PlacementSelectionCriterion
              extended by net.sf.cpsolver.coursett.criteria.placement.WeightedHardConflicts
All Implemented Interfaces:
Criterion<Lecture,Placement>, InfoProvider<Lecture>, ModelListener<Lecture,Placement>, SolutionListener<Lecture,Placement>
Direct Known Subclasses:
PotentialHardConflicts

public class WeightedHardConflicts
extends PlacementSelectionCriterion
implements SolutionListener<Lecture,Placement>

Hard conflicts weighted by the conflict-based statistics (past occurrences).

Version:
CourseTT 1.2 (University Course Timetabling)
Copyright (C) 2006 - 2011 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
protected  long iIteration
           
protected  ConflictStatistics<Lecture,Placement> iStat
           
 
Fields inherited from class net.sf.cpsolver.ifs.criteria.AbstractCriterion
iBest, iDebug, iValue, iValueUpdateType, iWeight, sDoubleFormat, sPercentFormat
 
Constructor Summary
WeightedHardConflicts()
           
 
Method Summary
 void bestCleared(Solution<Lecture,Placement> solution)
          Called by the solution when method Solution.clearBest() is called.
 void bestRestored(Solution<Lecture,Placement> solution)
          Called by the solution when method Solution.restoreBest() is called.
 void bestSaved(Solution<Lecture,Placement> solution)
          Called by the solution when method Solution.saveBest() is called.
 void getInfo(Solution<Lecture,Placement> solution, Map<String,String> info)
          Called by the solution when it is asked to produce info table, see Solution.getInfo().
 void getInfo(Solution<Lecture,Placement> solution, Map<String,String> info, Collection<Lecture> variables)
          Called by the solution when it is asked to produce info table, see Solution.getInfo().
 double getPlacementSelectionWeightDefault(int level)
           
 String getPlacementSelectionWeightName()
           
 double getValue(Placement value, Set<Placement> conflicts)
          Value of a proposed assignment (including hard conflicts)
 boolean init(Solver<Lecture,Placement> solver)
          Notification that the model was initialized by the solver.
 void solutionUpdated(Solution<Lecture,Placement> solution)
          Called by the solution when it is updated, see Solution.update(double).
 
Methods inherited from class net.sf.cpsolver.coursett.criteria.placement.PlacementSelectionCriterion
getInfo, getInfo, getWeightDefault
 
Methods inherited from class net.sf.cpsolver.coursett.criteria.TimetablingCriterion
getPlacementSelectionWeight
 
Methods inherited from class net.sf.cpsolver.ifs.criteria.AbstractCriterion
afterAssigned, afterUnassigned, beforeAssigned, beforeUnassigned, bestRestored, bestSaved, clearCache, computeBounds, constraintAdded, constraintRemoved, getBest, getBounds, getBounds, getModel, getName, getPerc, getPercRev, getValue, getValue, getWeight, getWeightedBest, getWeightedValue, getWeightedValue, getWeightedValue, getWeightName, inc, variableAdded, variableRemoved
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

iStat

protected ConflictStatistics<Lecture,Placement> iStat

iIteration

protected long iIteration
Constructor Detail

WeightedHardConflicts

public WeightedHardConflicts()
Method Detail

init

public boolean init(Solver<Lecture,Placement> solver)
Description copied from interface: ModelListener
Notification that the model was initialized by the solver.

Specified by:
init in interface ModelListener<Lecture,Placement>
Overrides:
init in class TimetablingCriterion
Parameters:
solver - IFS solver

getPlacementSelectionWeightName

public String getPlacementSelectionWeightName()
Overrides:
getPlacementSelectionWeightName in class TimetablingCriterion

getValue

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

Specified by:
getValue in interface Criterion<Lecture,Placement>

getPlacementSelectionWeightDefault

public double getPlacementSelectionWeightDefault(int level)
Overrides:
getPlacementSelectionWeightDefault in class TimetablingCriterion

solutionUpdated

public void solutionUpdated(Solution<Lecture,Placement> solution)
Description copied from interface: SolutionListener
Called by the solution when it is updated, see Solution.update(double).

Specified by:
solutionUpdated in interface SolutionListener<Lecture,Placement>
Parameters:
solution - source solution

getInfo

public void getInfo(Solution<Lecture,Placement> solution,
                    Map<String,String> info)
Description copied from interface: SolutionListener
Called by the solution when it is asked to produce info table, see Solution.getInfo(). A listener can also add some its info into this table.

Specified by:
getInfo in interface SolutionListener<Lecture,Placement>
Parameters:
solution - source solution
info - produced info table

getInfo

public void getInfo(Solution<Lecture,Placement> solution,
                    Map<String,String> info,
                    Collection<Lecture> variables)
Description copied from interface: SolutionListener
Called by the solution when it is asked to produce info table, see Solution.getInfo(). A listener can also add some its info into this table.

Specified by:
getInfo in interface SolutionListener<Lecture,Placement>
Parameters:
solution - source solution
info - produced info table
variables - only variables from this set are included

bestCleared

public void bestCleared(Solution<Lecture,Placement> solution)
Description copied from interface: SolutionListener
Called by the solution when method Solution.clearBest() is called.

Specified by:
bestCleared in interface SolutionListener<Lecture,Placement>
Parameters:
solution - source solution

bestSaved

public void bestSaved(Solution<Lecture,Placement> solution)
Description copied from interface: SolutionListener
Called by the solution when method Solution.saveBest() is called.

Specified by:
bestSaved in interface SolutionListener<Lecture,Placement>
Parameters:
solution - source solution

bestRestored

public void bestRestored(Solution<Lecture,Placement> solution)
Description copied from interface: SolutionListener
Called by the solution when method Solution.restoreBest() is called.

Specified by:
bestRestored in interface SolutionListener<Lecture,Placement>
Parameters:
solution - source solution


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