Package org.optaplanner.core.impl.heuristic.selector.common.decorator

Interface SelectionProbabilityWeightFactory<Solution_,T>

Type Parameters:

Solution_ - the solution type, the class with the PlanningSolution annotation

T - the selection type

All Known Implementing Classes:

FairSelectorProbabilityWeightFactory

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface SelectionProbabilityWeightFactory<Solution_,T>

Create a probabilityWeight for a selection (which is a PlanningEntity, a planningValue, a Move or a Selector). A probabilityWeight represents the random chance that a selection will be selected. Some use cases benefit from focusing moves more actively on specific selections.

Implementations are expected to be stateless. The solver may choose to reuse instances.

Method Summary

Modifier and Type	Method	Description
double	createProbabilityWeight(ScoreDirector<Solution_> scoreDirector, T selection)

Method Details

createProbabilityWeight

double createProbabilityWeight(ScoreDirector<Solution_> scoreDirector,
 T selection)

Parameters:

scoreDirector - never null, the ScoreDirector which has the ScoreDirector.getWorkingSolution() to which the selection belongs or applies to

selection - never null, a PlanningEntity, a planningValue, a Move or a Selector to create the probabilityWeight for

Returns:

0.0 <= returnValue < Double.POSITIVE_INFINITY