ec.simple

Class SimpleShortStatistics

java.lang.Object

ec.Statistics

ec.simple.SimpleShortStatistics

All Implemented Interfaces:

Setup, Singleton, java.io.Serializable

Direct Known Subclasses:

KozaShortStatistics

public class SimpleShortStatistics
extends Statistics

A Simple-style statistics generator, intended to be easily parseable with awk or other Unix tools. Prints fitness information, one generation (or pseudo-generation) per line. If do-time is true, then timing information is also given. If do-size is true, then size information is also given. No final statistics information is provided. You can also set SimpleShortStatistics to only output every *modulus* generations to keep the tally shorter. And you can gzip the statistics file.

Each line represents a single generation. The first items on a line are always:

• The generation number
• (if do-time) how long initialization took in milliseconds, or how long the previous generation took to breed to form this generation
• (if do-time) How long evaluation took in milliseconds this generation

Then, (if do-subpops) the following items appear, once per each subpopulation:

• (if do-size) The average size of an individual this generation
• (if do-size) The average size of an individual so far in the run
• (if do-size) The size of the best individual this generation
• (if do-size) The size of the best individual so far in the run
• The mean fitness of the subpopulation this generation
• The best fitness of the subpopulation this generation
• The best fitness of the subpopulation so far in the run

Then the following items appear, for the whole population:

• (if do-size) The average size of an individual this generation
• (if do-size) The average size of an individual so far in the run
• (if do-size) The size of the best individual this generation
• (if do-size) The size of the best individual so far in the run
• The mean fitness this generation
• The best fitness this generation
• The best fitness so far in the run

Compressed files will be overridden on restart from checkpoint; uncompressed files will be appended on restart.

Parameters

base.file String (a filename), or nonexistant (signifies stdout)	(the log for statistics)
base.gzip boolean	(whether or not to compress the file (.gz suffix added)
base.modulus integer >= 1 (default)	(How often (in generations) should we print a statistics line?)
base.do-time bool = true or false (default)	(print timing information?)
base.do-size bool = true or false (default)	(print sizing information?)
base.do-subpops bool = true or false (default)	(print information on a per-subpop basis as well as per-population?)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
Individual[]	bestOfGeneration
Individual[]	bestSoFar
boolean	doSize
boolean	doSubpops
boolean	doTime
long	lastTime
int	modulus
static java.lang.String	P_COMPRESS
static java.lang.String	P_DO_SIZE
static java.lang.String	P_DO_SUBPOPS
static java.lang.String	P_DO_TIME
static java.lang.String	P_FULL
static java.lang.String	P_STATISTICS_FILE
static java.lang.String	P_STATISTICS_MODULUS
int	statisticslog
double[]	totalFitnessThisGen
long[]	totalIndsSoFar
long[]	totalIndsThisGen
long[]	totalSizeSoFar
long[]	totalSizeThisGen

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
SimpleShortStatistics()

Method Summary

Modifier and Type	Method and Description
Individual[]	getBestSoFar()
void	postBreedingStatistics(EvolutionState state) GENERATIONAL: Called immediately after breeding occurs.
void	postEvaluationStatistics(EvolutionState state) Prints out the statistics, but does not end with a println -- this lets overriding methods print additional statistics on the same line
void	postInitializationStatistics(EvolutionState state) GENERATIONAL: Called immediately after population initialization occurs.
void	preBreedingStatistics(EvolutionState state) GENERATIONAL: Called immediately before breeding occurs.
void	preEvaluationStatistics(EvolutionState state) GENERATIONAL: Called immediately before evaluation occurs.
void	preInitializationStatistics(EvolutionState state) Called immediately before 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, finalStatistics, generationBoundaryStatistics, individualsBredStatistics, individualsEvaluatedStatistics, postCheckpointStatistics, postPostBreedingExchangeStatistics, postPreBreedingExchangeStatistics, preCheckpointStatistics, prePostBreedingExchangeStatistics, prePreBreedingExchangeStatistics

Methods inherited from class java.lang.Object

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

Field Detail

P_STATISTICS_MODULUS

public static final java.lang.String P_STATISTICS_MODULUS

See Also:

Constant Field Values

P_COMPRESS

public static final java.lang.String P_COMPRESS

See Also:

Constant Field Values

P_FULL

public static final java.lang.String P_FULL

See Also:

Constant Field Values

P_DO_SIZE

public static final java.lang.String P_DO_SIZE

See Also:

Constant Field Values

P_DO_TIME

public static final java.lang.String P_DO_TIME

See Also:

Constant Field Values

P_DO_SUBPOPS

public static final java.lang.String P_DO_SUBPOPS

See Also:

Constant Field Values

P_STATISTICS_FILE

public static final java.lang.String P_STATISTICS_FILE

See Also:

Constant Field Values

statisticslog

public int statisticslog

modulus

public int modulus

doSize

public boolean doSize

doTime

public boolean doTime

doSubpops

public boolean doSubpops

bestSoFar

public Individual[] bestSoFar

totalSizeSoFar

public long[] totalSizeSoFar

totalIndsSoFar

public long[] totalIndsSoFar

totalIndsThisGen

public long[] totalIndsThisGen

totalSizeThisGen

public long[] totalSizeThisGen

totalFitnessThisGen

public double[] totalFitnessThisGen

bestOfGeneration

public Individual[] bestOfGeneration

lastTime

public long lastTime

Constructor Detail

SimpleShortStatistics

public SimpleShortStatistics()

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

getBestSoFar

public Individual[] getBestSoFar()

preInitializationStatistics

public void preInitializationStatistics(EvolutionState state)

Description copied from class: Statistics

Called immediately before population initialization occurs.

Overrides:

preInitializationStatistics 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

preBreedingStatistics

public void preBreedingStatistics(EvolutionState state)

Description copied from class: Statistics

GENERATIONAL: Called immediately before breeding occurs.

Overrides:

preBreedingStatistics in class Statistics

postBreedingStatistics

public void postBreedingStatistics(EvolutionState state)

Description copied from class: Statistics

GENERATIONAL: Called immediately after breeding occurs.

Overrides:

postBreedingStatistics in class Statistics

preEvaluationStatistics

public void preEvaluationStatistics(EvolutionState state)

Description copied from class: Statistics

GENERATIONAL: Called immediately before evaluation occurs.

Overrides:

preEvaluationStatistics in class Statistics

postEvaluationStatistics

public void postEvaluationStatistics(EvolutionState state)

Prints out the statistics, but does not end with a println -- this lets overriding methods print additional statistics on the same line

Overrides:

postEvaluationStatistics in class Statistics