ec.simple
Class SimpleStatistics

java.lang.Object
  ec.Statistics
      ec.simple.SimpleStatistics

All Implemented Interfaces:

Setup, Singleton, SteadyStateStatisticsForm, java.io.Serializable

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)

See Also:

Serialized Form

Field Summary

Individual[]	best_of_run The best individual we've found so far
static java.lang.String	P_COMPRESS compress?
static java.lang.String	P_STATISTICS_FILE log file parameter
int	statisticslog The Statistics' log

Fields inherited from class ec.Statistics

children, P_CHILD, P_NUMCHILDREN

Constructor Summary

SimpleStatistics()

Method Summary

void	finalStatistics(EvolutionState state, int result) Logs the best individual of the run.
void	individualsEvaluatedStatistics(SteadyStateEvolutionState state) Steady State only: loads any additional post-generation boundary stragglers into best_of_run.
void	postEvaluationStatistics(EvolutionState state) Logs the best individual of the generation.
void	postInitializationStatistics(EvolutionState state) Called immediately after population initialization occurs.
void	setup(EvolutionState state, Parameter base) Sets up the object by reading it from the parameters stored in state, built off of the parameter base base.

Methods inherited from class ec.Statistics

individualsBredStatistics, postBreedingStatistics, postCheckpointStatistics, postInitialEvaluationStatistics, postPostBreedingExchangeStatistics, postPreBreedingExchangeStatistics, preBreedingStatistics, preCheckpointStatistics, preEvaluationStatistics, preInitialEvaluationStatistics, preInitializationStatistics, prePostBreedingExchangeStatistics, prePreBreedingExchangeStatistics

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface ec.steadystate.SteadyStateStatisticsForm

individualsBredStatistics, postInitialEvaluationStatistics, preInitialEvaluationStatistics, preInitializationStatistics

Field Detail

P_STATISTICS_FILE

public static final java.lang.String P_STATISTICS_FILE

log file parameter

See Also:

Constant Field Values

P_COMPRESS

public static final java.lang.String P_COMPRESS

compress?

See Also:

Constant Field Values

statisticslog

public int statisticslog

The Statistics' log

best_of_run

public Individual[] best_of_run

The best individual we've found so far

Constructor Detail

SimpleStatistics

public SimpleStatistics()

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

Overrides:

setup in class Statistics

postInitializationStatistics

public void postInitializationStatistics(EvolutionState state)

Description copied from class: Statistics

Called immediately after population initialization occurs.

Specified by:

postInitializationStatistics in interface SteadyStateStatisticsForm

Overrides:

postInitializationStatistics in class Statistics

postEvaluationStatistics

public void postEvaluationStatistics(EvolutionState state)

Logs the best individual of the generation.

Overrides:

postEvaluationStatistics in class Statistics

individualsEvaluatedStatistics

public void individualsEvaluatedStatistics(SteadyStateEvolutionState state)

Steady State only: loads any additional post-generation boundary stragglers into best_of_run.

Specified by:

individualsEvaluatedStatistics in interface SteadyStateStatisticsForm

Overrides:

individualsEvaluatedStatistics in class Statistics

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