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## org.drools.planner.core.score.calculator
Interface ScoreCalculator

All Superinterfaces:
  Cloneable

All Known Subinterfaces:
  HardAndSoftConstraintScoreCalculator

All Known Implementing Classes:
  AbstractScoreCalculator, DefaultHardAndSoftConstraintScoreCalculator, SimpleDoubleScoreCalculator, SimpleScoreCalculator

    public interface ScoreCalculator

extends Cloneable

Evaluates a solution based on its WorkingMemory (which is part of the rule production system).

Method Summary
`Score` | `calculateScore()` Calculates the score: the solution (encountered at a step) with the highest score will be seen as the the best solution.
`ScoreCalculator` | `clone()`

Method Detail

### calculateScore

    Score calculateScore()

  Calculates the score: the solution (encountered at a step) with the highest score will be seen as the the best solution. The step score calculation should be kept stable over all steps. When the solution is modified during a Move, the WorkingMemory's FactHandles should have been correctly notified. Before the score is calculated, all rules are fired, which should trigger an update of this instance.

  Returns:
    never null, the score of the solution

### clone

    ScoreCalculator clone()

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