Package ec.simple

Class SimpleStatistics

java.lang.Object
ec.Statistics
ec.simple.SimpleStatistics
All Implemented Interfaces:
Setup, Singleton, SteadyStateStatisticsForm, Serializable
Direct Known Subclasses:
HypervolumeStatistics, MultiObjectiveStatistics
public class SimpleStatistics extends Statistics implements SteadyStateStatisticsForm
A basic Statistics class suitable for simple problem applications. SimpleStatistics prints out the best individual, per subpopulation, each generation. At the end of a run, it also prints out the best individual of the run. SimpleStatistics outputs this data to a log which may either be a provided file or stdout. Compressed files will be overridden on restart from checkpoint; uncompressed files will be appended on restart.

SimpleStatistics implements a simple version of steady-state statistics: if it quits before a generation boundary, it will include the best individual discovered, even if the individual was discovered after the last boundary. This is done by using individualsEvaluatedStatistics(...) to update best-individual-of-generation in addition to doing it in postEvaluationStatistics(...).

Parameters

base.gzip
boolean		 (whether or not to compress the file (.gz suffix added)
base.file
String (a filename), or nonexistant (signifies stdout)		 (the log for statistics)
base.do-final
boolean		 (do we print out any final statistics to the log?)
base.do-generation
boolean		 (do we print out any per-generation statistics to the log?)
base.do-message
boolean		 (do we print out any per-generation statistics to stdout?)
base.do-description
boolean		 (do we print out any final description to the log?)
base.do-per-generation-description
boolean		 (do we print out any per-generation description to stdout?)
See Also:

  • Field Details

    • P_STATISTICS_FILE

      public static final String P_STATISTICS_FILE
      log file parameter
      See Also:

    • P_COMPRESS

      public static final String P_COMPRESS
      compress?
      See Also:

    • P_DO_FINAL

      public static final String P_DO_FINAL
      See Also:

    • P_DO_GENERATION

      public static final String P_DO_GENERATION
      See Also:

    • P_DO_MESSAGE

      public static final String P_DO_MESSAGE
      See Also:

    • P_DO_DESCRIPTION

      public static final String P_DO_DESCRIPTION
      See Also:

    • P_DO_PER_GENERATION_DESCRIPTION

      public static final String P_DO_PER_GENERATION_DESCRIPTION
      See Also:

    • statisticslog

      public int statisticslog
      The Statistics' log

    • best_of_run

      public Individual[] best_of_run
      The best individual we've found so far

    • compress

      public boolean compress
      Should we compress the file?

    • doFinal

      public boolean doFinal

    • doGeneration

      public boolean doGeneration

    • doMessage

      public boolean doMessage

    • doDescription

      public boolean doDescription

    • doPerGenerationDescription

      public boolean doPerGenerationDescription

  • Constructor Details

    • SimpleStatistics

      public SimpleStatistics()

  • Method Details

    • getBestSoFar

      public Individual[] getBestSoFar()

    • 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
      Overrides:
      setup in class Statistics

    • postInitializationStatistics

      public void postInitializationStatistics(EvolutionState state)
      Description copied from class: Statistics
      GENERATIONAL: Called immediately after population initialization occurs.
      Overrides:
      postInitializationStatistics in class Statistics

    • bypassPostEvaluationStatistics

      protected void bypassPostEvaluationStatistics(EvolutionState state)
      Allows MultiObjectiveStatistics etc. to call super.super.postEvaluationStatistics(...) without calling super.postEvaluationStatistics(...)

    • postEvaluationStatistics

      public void postEvaluationStatistics(EvolutionState state)
      Description copied from class: Statistics
      GENERATIONAL: Called immediately after evaluation occurs.
      Overrides:
      postEvaluationStatistics in class Statistics

    • bypassFinalStatistics

      protected void bypassFinalStatistics(EvolutionState state, int result)
      Allows MultiObjectiveStatistics etc. to call super.super.finalStatistics(...) without calling super.finalStatistics(...)

    • finalStatistics

      public void finalStatistics(EvolutionState state, int result)
      Logs the best individual of the run.
      Specified by:
      finalStatistics in interface SteadyStateStatisticsForm
      Overrides:
      finalStatistics in class Statistics