Multistage Moves

Multistage moves are moves composed of one or more stages, where each stage selects a single Move to execute.

Each stage has access to either a BasicVariableMoveEvaluator or a ListVariableMoveEvaluator, which allows the stage to evaluate moves without executing them.

Stages are selected from either a BasicVariableStageProvider or a ListVariableStageProvider, which is initialized from the working solution at phase start.

Multistage moves are configured from either a MultistageMoveSelectorConfig or a ListMultistageMoveSelectorConfig.

Multistage moves are useful for creating specialized ruin-and-recreate moves where the valid values that won’t violate hard constraints can be determined in advance.