com.parabon.ec.steadystate
Class SteadyStateEvolutionState

java.lang.Object
  ec.EvolutionState
      ec.steadystate.SteadyStateEvolutionState
          com.parabon.ec.steadystate.SteadyStateEvolutionState

All Implemented Interfaces:

Setup, Singleton, java.io.Serializable

public class SteadyStateEvolutionState
extends SteadyStateEvolutionState

ORIGIN steady-state and opportunistic evolution state.

Author:

Curt Larock

See Also:

Serialized Form

Field Summary

protected boolean	didFlush_ Ensure that the entire initial population is launched.
protected boolean	flushAtMax_ Flush whenever the max number of individuals evaluating is reached.
protected static org.apache.commons.logging.Log	log
protected int	maxIndsEvaluating_
protected int	maxIndsToCreate_
protected int	numIndsCreated_ Number of new individuals created
protected int	numIndsEvaluating_ Number of individuals currently being evaluated in all active tasks.
protected float	overgeneratePercent_
static java.lang.String	P_MAX_EVALUATING Max number of individuals that can be in the process of asynchronous evaluation
static java.lang.String	P_OVERGENERATE_PERCENT Additional individuals to generate beyond population size
static java.lang.String	P_PREF_JOBS Preferred number of individuals to be executed by each slave task.
static long	POLL_TIMEOUT_MSEC Poll interval for returning tasks.
protected int	populationSize_ Total number of individuals in all subpopulations.
protected int	prefJobsPerSlave_

Fields inherited from class ec.steadystate.SteadyStateEvolutionState

evaluations, firstTime, generationBoundary, generationSize, individualCount, individualHash, numEvaluations, P_NUMEVALUATIONS, P_STEADYSTATE, UNDEFINED, whichSubpop

Fields inherited from class ec.EvolutionState

breeder, breedthreads, C_STARTED_FRESH, C_STARTED_FROM_CHECKPOINT, checkpoint, checkpointModulo, checkpointPrefix, context_, evalthreads, evaluator, exchanger, finisher, generation, initializer, job, numGenerations, output, P_BREEDER, P_CHECKPOINT, P_CHECKPOINTMODULO, P_CHECKPOINTPREFIX, P_EVALUATOR, P_EXCHANGER, P_FINISHER, P_GENERATIONS, P_INITIALIZER, P_QUITONRUNCOMPLETE, P_STATISTICS, parameters, population, quitOnRunComplete, R_FAILURE, R_NOTDONE, R_SUCCESS, random, randomSeedOffset, runtimeArguments, statistics

Constructor Summary

SteadyStateEvolutionState()

Method Summary

int	evolve() Sends individuals to be evaluated and collects evaluation results.
void	finish(int result)
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.
void	startFresh()
void	startFromCheckpoint() Resets the number of individuals currently evaluating after a checkpoint.

Methods inherited from class ec.EvolutionState

performCheckpoint, resetFromCheckpoint, run

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static final org.apache.commons.logging.Log log

P_MAX_EVALUATING

public static final java.lang.String P_MAX_EVALUATING

Max number of individuals that can be in the process of asynchronous evaluation

See Also:

Constant Field Values

P_OVERGENERATE_PERCENT

public static final java.lang.String P_OVERGENERATE_PERCENT

Additional individuals to generate beyond population size

See Also:

Constant Field Values

P_PREF_JOBS

public static final java.lang.String P_PREF_JOBS

Preferred number of individuals to be executed by each slave task.

See Also:

Constant Field Values

POLL_TIMEOUT_MSEC

public static final long POLL_TIMEOUT_MSEC

Poll interval for returning tasks.

See Also:

Constant Field Values

maxIndsEvaluating_

protected int maxIndsEvaluating_

numIndsEvaluating_

protected int numIndsEvaluating_

Number of individuals currently being evaluated in all active tasks.

numIndsCreated_

protected int numIndsCreated_

Number of new individuals created

prefJobsPerSlave_

protected int prefJobsPerSlave_

didFlush_

protected boolean didFlush_

Ensure that the entire initial population is launched.

flushAtMax_

protected boolean flushAtMax_

Flush whenever the max number of individuals evaluating is reached.

populationSize_

protected int populationSize_

Total number of individuals in all subpopulations.

overgeneratePercent_

protected float overgeneratePercent_

maxIndsToCreate_

protected int maxIndsToCreate_

Constructor Detail

SteadyStateEvolutionState

public SteadyStateEvolutionState()

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 SteadyStateEvolutionState

startFresh

public void startFresh()

Overrides:

startFresh in class SteadyStateEvolutionState

startFromCheckpoint

public void startFromCheckpoint()

Resets the number of individuals currently evaluating after a checkpoint. We could make these fields transient, but this would change the serialization format.

Overrides:

startFromCheckpoint in class EvolutionState

evolve

public int evolve()

Sends individuals to be evaluated and collects evaluation results.

Overrides:

evolve in class SteadyStateEvolutionState

finish

public void finish(int result)

Overrides:

finish in class SteadyStateEvolutionState

Parameters:

result -