org.encog.ml.prg.generator

Class AbstractPrgGenerator

java.lang.Object

org.encog.ml.prg.generator.AbstractPrgGenerator

All Implemented Interfaces:

PopulationGenerator, PrgGenerator, MultiThreadable

Direct Known Subclasses:

PrgFullGenerator, PrgGrowGenerator, RampedHalfAndHalf

public abstract class AbstractPrgGenerator
extends java.lang.Object
implements PrgGenerator, MultiThreadable

The abstract base for Full and Grow program generation.

Constructor Summary

Constructors

Constructor and Description
AbstractPrgGenerator(EncogProgramContext theContext, int theMaxDepth) Construct the generator.

Method Summary

Modifier and Type	Method and Description
void	addPopulationMember(PrgPopulation population, EncogProgram prg) Add a population member from one of the threads.
EncogProgram	attemptCreateGenome(java.util.Random rnd, Population pop) Attempt to create a genome.
ProgramNode	createRandomNode(java.util.Random rnd, EncogProgram program, int depthRemaining, java.util.List<ValueType> types, boolean includeTerminal, boolean includeFunction) Create a random note according to the specified paramaters.
ProgramNode	createTerminalNode(java.util.Random rnd, EncogProgram program, java.util.List<ValueType> types) Create a terminal node.
int	determineMaxDepth(java.util.Random rnd)
EncogProgram	generate(java.util.Random rnd) Generate a random genome.
void	generate(java.util.Random rnd, Population pop) Generate a random population.
ProgramExtensionTemplate	generateRandomOpcode(java.util.Random rnd, java.util.List<ProgramExtensionTemplate> opcodes) Generate a random opcode.
EncogProgramContext	getContext()
double	getMaxConst()
int	getMaxDepth()
int	getMaxGenerationErrors()
double	getMinConst()
RandomFactory	getRandomFactory()
CalculateScore	getScore()
int	getThreadCount()
boolean	isHasEnum()
void	setMaxConst(double maxConst)
void	setMaxGenerationErrors(int maxGenerationErrors) Set the maximum errors to allow during generation.
void	setMinConst(double minConst)
void	setRandomFactory(RandomFactory randomFactory)
void	setScore(CalculateScore score)
void	setThreadCount(int numThreads) Set the number of threads to use.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.encog.ml.prg.generator.PrgGenerator

createNode

Constructor Detail

AbstractPrgGenerator

public AbstractPrgGenerator(EncogProgramContext theContext,
                            int theMaxDepth)

Construct the generator.

Parameters:

theContext - The context that is to be used for generation.

theMaxDepth - The maximum depth to generate to.

Method Detail

addPopulationMember

public void addPopulationMember(PrgPopulation population,
                                EncogProgram prg)

Add a population member from one of the threads.

Parameters:

population - The population to add to.

prg - The program to add.

attemptCreateGenome

public EncogProgram attemptCreateGenome(java.util.Random rnd,
                                        Population pop)

Attempt to create a genome. Cycle the specified number of times if an error occurs.

Parameters:

rnd - The random number generator.

pop - The population.

Returns:

The generated genome.

createRandomNode

public ProgramNode createRandomNode(java.util.Random rnd,
                                    EncogProgram program,
                                    int depthRemaining,
                                    java.util.List<ValueType> types,
                                    boolean includeTerminal,
                                    boolean includeFunction)

Create a random note according to the specified paramaters.

Parameters:

rnd - A random number generator.

program - The program to generate for.

depthRemaining - The depth remaining to generate.

types - The types to generate.

includeTerminal - Should we include terminal nodes.

includeFunction - Should we include function nodes.

Returns:

The generated program node.

createTerminalNode

public ProgramNode createTerminalNode(java.util.Random rnd,
                                      EncogProgram program,
                                      java.util.List<ValueType> types)

Create a terminal node.

Parameters:

rnd - A random number generator.

program - The program to generate for.

types - The types that we might generate.

Returns:

The terminal program node.

determineMaxDepth

public int determineMaxDepth(java.util.Random rnd)

generate

public EncogProgram generate(java.util.Random rnd)

Generate a random genome.

Specified by:

generate in interface PopulationGenerator

Parameters:

rnd - A random number generator.

Returns:

A random genome.

generate

public void generate(java.util.Random rnd,
                     Population pop)

Generate a random population.

Specified by:

generate in interface PopulationGenerator

Parameters:

rnd - Random number generator.

pop - The population to generate into.

generateRandomOpcode

public ProgramExtensionTemplate generateRandomOpcode(java.util.Random rnd,
                                                     java.util.List<ProgramExtensionTemplate> opcodes)

Generate a random opcode.

Parameters:

rnd - Random number generator.

opcodes - The opcodes to choose from.

Returns:

The selected opcode.

getContext

public EncogProgramContext getContext()

Returns:

the context

getMaxConst

public double getMaxConst()

Returns:

the maxConst

getMaxDepth

public int getMaxDepth()

Returns:

the maxDepth

getMaxGenerationErrors

public int getMaxGenerationErrors()

Specified by:

getMaxGenerationErrors in interface PrgGenerator

Returns:

the maxGenerationErrors

getMinConst

public double getMinConst()

Returns:

the minConst

getRandomFactory

public RandomFactory getRandomFactory()

Returns:

the randomFactory

getScore

public CalculateScore getScore()

Returns:

the score

getThreadCount

public int getThreadCount()

Specified by:

getThreadCount in interface MultiThreadable

Returns:

The desired number of threads.

isHasEnum

public boolean isHasEnum()

Returns:

the hasEnum

setMaxConst

public void setMaxConst(double maxConst)

Parameters:

maxConst - the maxConst to set

setMaxGenerationErrors

public void setMaxGenerationErrors(int maxGenerationErrors)

Description copied from interface: PrgGenerator

Set the maximum errors to allow during generation.

Specified by:

setMaxGenerationErrors in interface PrgGenerator

Parameters:

maxGenerationErrors - the maxGenerationErrors to set

setMinConst

public void setMinConst(double minConst)

Parameters:

minConst - the minConst to set

setRandomFactory

public void setRandomFactory(RandomFactory randomFactory)

Parameters:

randomFactory - the randomFactory to set

setScore

public void setScore(CalculateScore score)

Parameters:

score - the score to set

setThreadCount

public void setThreadCount(int numThreads)

Description copied from interface: MultiThreadable

Set the number of threads to use.

Specified by:

setThreadCount in interface MultiThreadable

Parameters:

numThreads - The desired thread count.