ec.simple

Class SimpleStatistics

java.lang.Object

ec.Statistics

ec.simple.SimpleStatistics

All Implemented Interfaces:

Setup, Singleton, SteadyStateStatisticsForm, java.io.Serializable

Direct Known Subclasses:

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)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
Individual[]	best_of_run The best individual we've found so far
boolean	compress Should we compress the file?
boolean	doDescription
boolean	doFinal
boolean	doGeneration
boolean	doMessage
boolean	doPerGenerationDescription
static java.lang.String	P_COMPRESS compress?
static java.lang.String	P_DO_DESCRIPTION
static java.lang.String	P_DO_FINAL
static java.lang.String	P_DO_GENERATION
static java.lang.String	P_DO_MESSAGE
static java.lang.String	P_DO_PER_GENERATION_DESCRIPTION
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_MUZZLE, P_NUMCHILDREN, P_SILENT, P_SILENT_FILE, P_SILENT_PRINT, silentFile, silentPrint

Constructor Summary

Constructors

Constructor and Description
SimpleStatistics()

Method Summary

Modifier and Type	Method and Description
void	finalStatistics(EvolutionState state, int result) Logs the best individual of the run.
Individual[]	getBestSoFar()
void	postEvaluationStatistics(EvolutionState state) Logs the best individual of the generation.
void	postInitializationStatistics(EvolutionState state) GENERATIONAL: 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

enteringInitialPopulationStatistics, enteringSteadyStateStatistics, generationBoundaryStatistics, individualsBredStatistics, individualsEvaluatedStatistics, postBreedingStatistics, postCheckpointStatistics, postPostBreedingExchangeStatistics, postPreBreedingExchangeStatistics, preBreedingStatistics, preCheckpointStatistics, preEvaluationStatistics, preInitializationStatistics, prePostBreedingExchangeStatistics, prePreBreedingExchangeStatistics

Methods inherited from class java.lang.Object

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

Methods inherited from interface ec.steadystate.SteadyStateStatisticsForm

enteringInitialPopulationStatistics, enteringSteadyStateStatistics, generationBoundaryStatistics, individualsBredStatistics, individualsEvaluatedStatistics, postCheckpointStatistics, postPostBreedingExchangeStatistics, postPreBreedingExchangeStatistics, preCheckpointStatistics, prePostBreedingExchangeStatistics, prePreBreedingExchangeStatistics

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

P_DO_FINAL

public static final java.lang.String P_DO_FINAL

See Also:

Constant Field Values

P_DO_GENERATION

public static final java.lang.String P_DO_GENERATION

See Also:

Constant Field Values

P_DO_MESSAGE

public static final java.lang.String P_DO_MESSAGE

See Also:

Constant Field Values

P_DO_DESCRIPTION

public static final java.lang.String P_DO_DESCRIPTION

See Also:

Constant Field Values

P_DO_PER_GENERATION_DESCRIPTION

public static final java.lang.String P_DO_PER_GENERATION_DESCRIPTION

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

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 Detail

SimpleStatistics

public SimpleStatistics()

Method Detail

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

postEvaluationStatistics

public void postEvaluationStatistics(EvolutionState state)

Logs the best individual of the generation.

Overrides:

postEvaluationStatistics 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