org.drools.planner.core.localsearch.decider.acceptor.tabu
Class AbstractTabuAcceptor

java.lang.Object
  extended by org.drools.planner.core.localsearch.event.LocalSearchSolverPhaseLifecycleListenerAdapter
      extended by org.drools.planner.core.localsearch.decider.acceptor.AbstractAcceptor
          extended by org.drools.planner.core.localsearch.decider.acceptor.tabu.AbstractTabuAcceptor
All Implemented Interfaces:
EventListener, Acceptor, LocalSearchSolverPhaseLifecycleListener
Direct Known Subclasses:
MoveTabuAcceptor, PropertyTabuAcceptor, SolutionTabuAcceptor

public abstract class AbstractTabuAcceptor
extends AbstractAcceptor

Abstract superclass for all Tabu Acceptors.

See Also:
Acceptor

Field Summary
protected  boolean aspirationEnabled
           
protected  boolean assertTabuHashCodeCorrectness
           
protected  int completeTabuSize
           
protected  int partialTabuSize
           
protected  List<Object> tabuSequenceList
           
protected  Map<Object,Integer> tabuToStepIndexMap
           
 
Fields inherited from class org.drools.planner.core.localsearch.decider.acceptor.AbstractAcceptor
logger
 
Constructor Summary
AbstractTabuAcceptor()
           
 
Method Summary
 double calculateAcceptChance(MoveScope moveScope)
          TODO the use for an acceptChance between 0.0 and 1.0 is unproven.
protected  double calculatePartialTabuAcceptChance(int partialTabuTime)
           
protected abstract  Collection<? extends Object> findNewTabu(LocalSearchStepScope localSearchStepScope)
           
protected abstract  Collection<? extends Object> findTabu(MoveScope moveScope)
           
 int getCompleteTabuSize()
           
 void phaseStarted(LocalSearchSolverPhaseScope localSearchSolverPhaseScope)
           
 void setAspirationEnabled(boolean aspirationEnabled)
           
 void setAssertTabuHashCodeCorrectness(boolean assertTabuHashCodeCorrectness)
           
 void setCompleteTabuSize(int completeTabuSize)
           
 void setPartialTabuSize(int partialTabuSize)
           
 void stepTaken(LocalSearchStepScope localSearchStepScope)
           
 
Methods inherited from class org.drools.planner.core.localsearch.event.LocalSearchSolverPhaseLifecycleListenerAdapter
beforeDeciding, phaseEnded, stepDecided
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface org.drools.planner.core.localsearch.event.LocalSearchSolverPhaseLifecycleListener
beforeDeciding, phaseEnded, stepDecided
 

Field Detail

completeTabuSize

protected int completeTabuSize

partialTabuSize

protected int partialTabuSize

aspirationEnabled

protected boolean aspirationEnabled

assertTabuHashCodeCorrectness

protected boolean assertTabuHashCodeCorrectness

tabuToStepIndexMap

protected Map<Object,Integer> tabuToStepIndexMap

tabuSequenceList

protected List<Object> tabuSequenceList
Constructor Detail

AbstractTabuAcceptor

public AbstractTabuAcceptor()
Method Detail

getCompleteTabuSize

public int getCompleteTabuSize()

setCompleteTabuSize

public void setCompleteTabuSize(int completeTabuSize)

setPartialTabuSize

public void setPartialTabuSize(int partialTabuSize)

setAspirationEnabled

public void setAspirationEnabled(boolean aspirationEnabled)

setAssertTabuHashCodeCorrectness

public void setAssertTabuHashCodeCorrectness(boolean assertTabuHashCodeCorrectness)

phaseStarted

public void phaseStarted(LocalSearchSolverPhaseScope localSearchSolverPhaseScope)
Specified by:
phaseStarted in interface LocalSearchSolverPhaseLifecycleListener
Overrides:
phaseStarted in class LocalSearchSolverPhaseLifecycleListenerAdapter

calculateAcceptChance

public double calculateAcceptChance(MoveScope moveScope)
Description copied from interface: Acceptor
TODO the use for an acceptChance between 0.0 and 1.0 is unproven. A boolean instead of a double is sufficient?

Parameters:
moveScope - not null
Returns:
never negative; if rejected 0.0; if accepted higher than 0.0 (usually 1.0)

calculatePartialTabuAcceptChance

protected double calculatePartialTabuAcceptChance(int partialTabuTime)

stepTaken

public void stepTaken(LocalSearchStepScope localSearchStepScope)
Specified by:
stepTaken in interface LocalSearchSolverPhaseLifecycleListener
Overrides:
stepTaken in class LocalSearchSolverPhaseLifecycleListenerAdapter

findTabu

protected abstract Collection<? extends Object> findTabu(MoveScope moveScope)

findNewTabu

protected abstract Collection<? extends Object> findNewTabu(LocalSearchStepScope localSearchStepScope)


Copyright © 2001-2011 JBoss by Red Hat. All Rights Reserved.