org.aksw.limes.core.ml.algorithm.eagle.genes

Class AddMetric

java.lang.Object

org.jgap.gp.CommandGene

org.aksw.limes.core.ml.algorithm.eagle.genes.AddMetric

All Implemented Interfaces:

Serializable, Cloneable, Comparable, org.jgap.gp.IMutateable, org.jgap.util.ICloneable

public class AddMetric
extends org.jgap.gp.CommandGene
implements org.jgap.gp.IMutateable, org.jgap.util.ICloneable

Class to implement the ADD command for evolution of metric expressions. A ADD Command combines Similarity Measures with coefficients. E.g. "ADD(0.5*trigram(x.title,y.title)|0.9, 0.5*cosine(x.authors,y.authors)|0.7)". So LIMES recalculates the thresholds: threshold1 = (threshold - coef2) / coef1;

Version:

Jul 21, 2016

Author:

Klaus Lyko, Mohamed Sherif (sherif@informatik.uni-leipzig.de)

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.jgap.gp.CommandGene

org.jgap.gp.CommandGene.COMMAND_TYPE

Field Summary

Fields inherited from class org.jgap.gp.CommandGene

BooleanClass, CharacterClass, DELTA, DoubleClass, FloatClass, IntegerClass, LongClass, nodeIndex, VoidClass

Fields inherited from interface org.jgap.gp.IMutateable

CVS_REVISION

Fields inherited from interface org.jgap.util.ICloneable

CVS_REVISION

Constructor Summary

Constructors

Constructor and Description
AddMetric(org.jgap.gp.impl.GPConfiguration config) Default Constructor.
AddMetric(org.jgap.gp.impl.GPConfiguration config, Class<?> a_returnType, boolean mutateable) Constructor to manually set return type.

Method Summary

Modifier and Type	Method and Description
org.jgap.gp.CommandGene	applyMutation()
org.jgap.gp.CommandGene	applyMutation(int a_index, double a_percentage)
Object	clone()
Object	execute_object(org.jgap.gp.impl.ProgramChromosome a_chrom, int a_n, Object[] args)
void	execute_void(org.jgap.gp.impl.ProgramChromosome a_chrom, int a_n, Object[] args)
Class<?>	getChildType(org.jgap.gp.IGPProgram a_ind, int a_chromNum) We're expecting 2 pairs of aSimilarityCommand and a coefficient.
static String	removeThresholdFromMeasure(String measure) ADD metrics only have coefficients no local thresholds.
String	toString()

Methods inherited from class org.jgap.gp.CommandGene

check, check, cleanup, compareTo, dynamizeArity, ensureUniqueness, ensureUniqueness, ensureUniqueness2, equals, execute_boolean, execute_double, execute_float, execute_int, execute_long, execute, getAllele, getApplicationData, getArity, getArityMax, getArityMin, getCommandType, getEnergy, getGPConfiguration, getInternalValue, getName, getPersistentRepresentation, getPersistentRepresentationExt, getReturnType, getSubChildType, getSubChildTypes, getSubReturnType, hashCode, init, isAffectGlobalState, isCompareApplicationData, isFloatType, isIntegerType, isValid, isValid, setAllele, setApplicationData, setArity, setArityMax, setArityMin, setCompareApplicationData, setEnergy, setNoValidation, setReturnType, setToRandomValue, setValueFromPersistentRepresentation, setValueFromString, size

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

AddMetric

public AddMetric(org.jgap.gp.impl.GPConfiguration config)
          throws org.jgap.InvalidConfigurationException

Default Constructor. Setting return type to String.class and making ADD no candidate for mutation.

Parameters:

config - A GPConfiguration

Throws:

org.jgap.InvalidConfigurationException - when an invalid value has been passed to a Configuration object

AddMetric

public AddMetric(org.jgap.gp.impl.GPConfiguration config,
                 Class<?> a_returnType,
                 boolean mutateable)
          throws org.jgap.InvalidConfigurationException

Constructor to manually set return type.

Parameters:

config - A GPConfiguration

a_returnType - Class this CommandGene returns on executing.

Throws:

org.jgap.InvalidConfigurationException - when an invalid value has been passed to a Configuration object

Method Detail

removeThresholdFromMeasure

public static String removeThresholdFromMeasure(String measure)

ADD metrics only have coefficients no local thresholds. So this function removes them.

Parameters:

measure, - e.g. trigrams(s.x,t.y)|0.8

Returns:

shortened measure, e.g. trigrams(s.x,t.y)

toString

public String toString()

Specified by:

toString in class org.jgap.gp.CommandGene

getChildType

public Class<?> getChildType(org.jgap.gp.IGPProgram a_ind,
                             int a_chromNum)

We're expecting 2 pairs of aSimilarityCommand and a coefficient.

Overrides:

getChildType in class org.jgap.gp.CommandGene

Parameters:

a_ind - A GPProgram

a_chromNum - The number of the chromosome.

Returns:

Class type of the child.

execute_object

public Object execute_object(org.jgap.gp.impl.ProgramChromosome a_chrom,
                             int a_n,
                             Object[] args)

Overrides:

execute_object in class org.jgap.gp.CommandGene

execute_void

public void execute_void(org.jgap.gp.impl.ProgramChromosome a_chrom,
                         int a_n,
                         Object[] args)

Overrides:

execute_void in class org.jgap.gp.CommandGene

applyMutation

public org.jgap.gp.CommandGene applyMutation(int a_index,
                                             double a_percentage)
                                      throws org.jgap.InvalidConfigurationException

Specified by:

applyMutation in interface org.jgap.gp.IMutateable

Throws:

org.jgap.InvalidConfigurationException

applyMutation

public org.jgap.gp.CommandGene applyMutation()
                                      throws org.jgap.InvalidConfigurationException

Returns:

CommandGene

Throws:

org.jgap.InvalidConfigurationException - when an invalid value has been passed to a Configuration object

clone

public Object clone()

Specified by:

clone in interface org.jgap.util.ICloneable

Overrides:

clone in class Object