org.dllearner.algorithms.el

Class ELLearningAlgorithm

java.lang.Object

org.dllearner.core.AbstractComponent

org.dllearner.core.AbstractCELA

org.dllearner.algorithms.el.ELLearningAlgorithm

All Implemented Interfaces:

ClassExpressionLearningAlgorithm, Component, LearningAlgorithm, StoppableLearningAlgorithm

public class ELLearningAlgorithm
extends AbstractCELA

A learning algorithm for EL, which is based on an ideal refinement operator. TODO redundancy check

Author:

Jens Lehmann

Field Summary

Fields inherited from class org.dllearner.core.AbstractCELA

MAX_NR_OF_RESULTS

Constructor Summary

Constructors

Constructor and Description
ELLearningAlgorithm()
ELLearningAlgorithm(AbstractClassExpressionLearningProblem problem, AbstractReasonerComponent reasoner)

Method Summary

Modifier and Type	Method and Description
Set<org.semanticweb.owlapi.model.OWLClass>	getIgnoredConcepts()
double	getNoisePercentage()
org.semanticweb.owlapi.model.OWLClassExpression	getStartClass()
SearchTreeNode	getStartNode()
void	init() Method to be called after the component has been configured.
boolean	isInstanceBasedDisjoints()
boolean	isStopOnFirstDefinition()
void	setClassToDescribe(org.semanticweb.owlapi.model.OWLClass classToDescribe)
void	setHeuristic(ELHeuristic heuristic)
void	setIgnoredConcepts(Set<org.semanticweb.owlapi.model.OWLClass> ignoredConcepts)
void	setInstanceBasedDisjoints(boolean instanceBasedDisjoints)
void	setMaxClassExpressionDepth(int maxClassExpressionDepth)
void	setMaxNrOfResults(int maxNrOfResults)
void	setNoisePercentage(double noisePercentage)
void	setReplaceSearchTree(boolean replaceSearchTree)
void	setSearchTreeFile(String searchTreeFile)
void	setStartClass(org.semanticweb.owlapi.model.OWLClassExpression startClass)
void	setStopOnFirstDefinition(boolean stopOnFirstDefinition)
void	setWriteSearchTree(boolean writeSearchTree)
void	start() Starts the algorithm.

Methods inherited from class org.dllearner.core.AbstractCELA

changeLearningProblem, changeReasonerComponent, getAllowedConcepts, getAllowedDataProperties, getAllowedObjectProperties, getCurrentlyBestDescription, getCurrentlyBestDescriptions, getCurrentlyBestDescriptions, getCurrentlyBestDescriptions, getCurrentlyBestEvaluatedDescription, getCurrentlyBestEvaluatedDescriptions, getCurrentlyBestEvaluatedDescriptions, getCurrentlyBestEvaluatedDescriptions, getCurrentlyBestEvaluatedDescriptions, getCurrentlyBestMostGeneralEvaluatedDescriptions, getIgnoredDataProperties, getIgnoredObjectProperties, getLearningProblem, getMaxExecutionTimeInSeconds, getReasoner, isRunning, isUseMinimizer, setAllowedConcepts, setAllowedDataProperties, setAllowedObjectProperties, setIgnoredDataProperties, setIgnoredObjectProperties, setLearningProblem, setMaxExecutionTime, setMaxExecutionTimeInSeconds, setReasoner, setRenderer, setUseMinimizer, stop, supportedLearningProblems

Methods inherited from class org.dllearner.core.AbstractComponent

isInitialized

Methods inherited from class java.lang.Object

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

Constructor Detail

ELLearningAlgorithm

public ELLearningAlgorithm()

ELLearningAlgorithm

public ELLearningAlgorithm(AbstractClassExpressionLearningProblem problem,
                           AbstractReasonerComponent reasoner)

Method Detail

init

public void init()
          throws ComponentInitException

Description copied from interface: Component

Method to be called after the component has been configured. Implementation of components can overwrite this method to perform setup and initialisation tasks for this component.

Throws:

ComponentInitException - This exception is thrown if any exceptions occur within the initialisation process of this component. As component developer, you are encouraged to re-throw occurring exception as ComponentInitException and giving an error message as well as the actually exception by using the constructor ComponentInitException(String, Throwable).

start

public void start()

Description copied from interface: LearningAlgorithm

Starts the algorithm. It runs until paused, stopped, or a termination criterion has been reached.

setHeuristic

public void setHeuristic(ELHeuristic heuristic)

Parameters:

heuristic - the heuristic to set

isInstanceBasedDisjoints

public boolean isInstanceBasedDisjoints()

setInstanceBasedDisjoints

public void setInstanceBasedDisjoints(boolean instanceBasedDisjoints)

setStopOnFirstDefinition

public void setStopOnFirstDefinition(boolean stopOnFirstDefinition)

Parameters:

stopOnFirstDefinition - the stopOnFirstDefinition to set

isStopOnFirstDefinition

public boolean isStopOnFirstDefinition()

Returns:

the stopOnFirstDefinition

getStartNode

public SearchTreeNode getStartNode()

Returns:

the start node

getNoisePercentage

public double getNoisePercentage()

Returns:

the noise in percentage

setNoisePercentage

public void setNoisePercentage(double noisePercentage)

Parameters:

noisePercentage - the noise in percentage to set

setStartClass

public void setStartClass(org.semanticweb.owlapi.model.OWLClassExpression startClass)

Parameters:

startClass - the start class to set

getStartClass

public org.semanticweb.owlapi.model.OWLClassExpression getStartClass()

Returns:

the start class

setIgnoredConcepts

public void setIgnoredConcepts(Set<org.semanticweb.owlapi.model.OWLClass> ignoredConcepts)

Overrides:

setIgnoredConcepts in class AbstractCELA

Parameters:

ignoredConcepts - the ignored concepts to set

getIgnoredConcepts

public Set<org.semanticweb.owlapi.model.OWLClass> getIgnoredConcepts()

Overrides:

getIgnoredConcepts in class AbstractCELA

Returns:

the ignored concepts

setClassToDescribe

public void setClassToDescribe(org.semanticweb.owlapi.model.OWLClass classToDescribe)

Parameters:

classToDescribe - the classToDescribe to set

setMaxNrOfResults

public void setMaxNrOfResults(int maxNrOfResults)

Parameters:

maxNrOfResults - the maxNrOfResults to set

setMaxClassExpressionDepth

public void setMaxClassExpressionDepth(int maxClassExpressionDepth)

Parameters:

maxClassExpressionDepth - the maximum class expression depth to set

setWriteSearchTree

public void setWriteSearchTree(boolean writeSearchTree)

Parameters:

writeSearchTree - the writeSearchTree to set

setSearchTreeFile

public void setSearchTreeFile(String searchTreeFile)

Parameters:

searchTreeFile - the searchTreeFile to set

setReplaceSearchTree

public void setReplaceSearchTree(boolean replaceSearchTree)

Parameters:

replaceSearchTree - the replaceSearchTree to set