Class TerminatedByCostValue

java.lang.Object
se.liu.ida.hefquin.engine.queryproc.impl.poptimizer.evolutionaryAlgorithm.TerminationCriterionBase
se.liu.ida.hefquin.engine.queryproc.impl.poptimizer.evolutionaryAlgorithm.TerminatedByCostValue
All Implemented Interfaces:
TerminationCriterion
public class TerminatedByCostValue extends TerminationCriterionBase
Termination is triggered when the lowest-cost plan per generation has not exceeded a specified threshold for a number of generations.

  • Field Details

    • costValueThreshold

      protected final double costValueThreshold

  • Constructor Details

    • TerminatedByCostValue

      public TerminatedByCostValue(double costValueThreshold, LogicalPlan plan)

  • Method Details

    • getFactory

      public static TerminationCriterionFactory getFactory(double costValueThreshold)

    • readyToTerminate

      public boolean readyToTerminate(Generation currentGeneration, List<Generation> allPreviousGenerations)
      Description copied from interface: TerminationCriterion
      Returns true if this termination criterion has been reached with the current generation.
      Parameters:
      currentGeneration - the current generation for which the termination criterion is test
      allPreviousGenerations - a list of all previous generations, in the order in which they have been created