Documentation of 'ec.Statistics' Java class
Statistics
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Class Statistics

  • All Implemented Interfaces:
    Setup, Singleton, java.io.Serializable
    Direct Known Subclasses:
    ChartableStatistics, MonaStatistics, MyStatistics, RandomRestarts, SimpleShortStatistics, SimpleStatistics, TarpeianStatistics

    public class Statistics
extends java.lang.Object
implements Singleton
    Statistics and its subclasses are Cliques which generate statistics during the run. Statistics are arranged in a tree hierarchy -- The root statistics object may have "children", and when the root is called, it calls its children with the same message. You can override this behavior however you see fit.

    There are lots of places where statistics might be nice to print out. These places are implemented as hooks in the Statistics object which you can override if you like; otherwise they call the default behavior. If you plan on allowing your Statistics subclass to contain children, you should remember to call the appropriate super.foo() if you override any foo() method.

    While there are lots of hooks, various EvolutionState objects only implement a subset of them. You'll need to look at the EvolutionState code to see which ones are implemented to make sure that your statistics hooks are called appropriately!

    Statistics objects should set up their statistics logs etc. during setup(...). Remember to make the log restartable in case of restarting from a checkpoint.

    Steady-State Statistics. For convenience, Statistics contains default implementations of the SteadyStateStatisticsForm methods but does not implement SteadyStateStatisticsForm. This mostly is intended to keep SteadyStateStatistcsForm implementations from having to call functions on all their children: instead they can just call foo.super();

    Parameters

    base.num-children
    int >= 0    		 (number of child statistics objects)
    base.child.n
    classname, inherits or equals ec.Statistics    		 (the class of child statistics object number n)

    Parameter bases

    base.child.n species (child statistics object number n)
    See Also:
    Serialized Form

    • Constructor Detail

      • Statistics

        public Statistics()

    • Method Detail

      • setup

        public void setup(EvolutionState state,
                  Parameter base)
        Description copied from interface: Setup
        Sets up the object by reading it from the parameters stored in state, built off of the parameter base base. If an ancestor implements this method, be sure to call super.setup(state,base); before you do anything else.
        Specified by:
        setup in interface Setup

      • preInitializationStatistics

        public void preInitializationStatistics(EvolutionState state)
        Called immediately before population initialization occurs.

      • postInitializationStatistics

        public void postInitializationStatistics(EvolutionState state)
        GENERATIONAL: Called immediately after population initialization occurs.

      • preCheckpointStatistics

        public void preCheckpointStatistics(EvolutionState state)
        Called immediately before checkpointing occurs.

      • postCheckpointStatistics

        public void postCheckpointStatistics(EvolutionState state)
        Called immediately after checkpointing occurs.

      • preEvaluationStatistics

        public void preEvaluationStatistics(EvolutionState state)
        GENERATIONAL: Called immediately before evaluation occurs.

      • postEvaluationStatistics

        public void postEvaluationStatistics(EvolutionState state)
        GENERATIONAL: Called immediately after evaluation occurs.

      • prePreBreedingExchangeStatistics

        public void prePreBreedingExchangeStatistics(EvolutionState state)
        Called immediately before the pre-breeding exchange occurs.

      • postPreBreedingExchangeStatistics

        public void postPreBreedingExchangeStatistics(EvolutionState state)
        Called immediately after the pre-breeding exchange occurs.

      • preBreedingStatistics

        public void preBreedingStatistics(EvolutionState state)
        GENERATIONAL: Called immediately before breeding occurs.

      • postBreedingStatistics

        public void postBreedingStatistics(EvolutionState state)
        GENERATIONAL: Called immediately after breeding occurs.

      • prePostBreedingExchangeStatistics

        public void prePostBreedingExchangeStatistics(EvolutionState state)
        Called immediately before the post-breeding exchange occurs.

      • postPostBreedingExchangeStatistics

        public void postPostBreedingExchangeStatistics(EvolutionState state)
        Called immediately after the post-breeding exchange occurs.

      • finalStatistics

        public void finalStatistics(EvolutionState state,
                            int result)
        Called immediately after the run has completed. result is either state.R_FAILURE, indicating that an ideal individual was not found, or state.R_SUCCESS, indicating that an ideal individual was found.

      • enteringInitialPopulationStatistics

        public void enteringInitialPopulationStatistics(SteadyStateEvolutionState state)
        STEADY-STATE: called when we created an empty initial Population.

      • enteringSteadyStateStatistics

        public void enteringSteadyStateStatistics(int subpop,
                                          SteadyStateEvolutionState state)
        STEADY-STATE: called when a given Subpopulation is entering the Steady-State.

      • individualsBredStatistics

        public void individualsBredStatistics(SteadyStateEvolutionState state,
                                      Individual[] individuals)
        STEADY-STATE: called each time new individuals are bred during the steady-state process.

      • individualsEvaluatedStatistics

        public void individualsEvaluatedStatistics(SteadyStateEvolutionState state,
                                           Individual[] newIndividuals,
                                           Individual[] oldIndividuals,
                                           int[] subpopulations,
                                           int[] indices)
        STEADY-STATE: called each time new individuals are evaluated during the steady-state process. You can look up the individuals in state.newIndividuals[]

      • generationBoundaryStatistics

        public void generationBoundaryStatistics(EvolutionState state)
        STEADY-STATE: called each time the generation count increments
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