org.dllearner.algorithms.decisiontrees.tdt

Class TDTClassifier

java.lang.Object

org.dllearner.core.AbstractComponent

org.dllearner.core.AbstractCELA

org.dllearner.algorithms.decisiontrees.tdt.AbstractTDTClassifier

org.dllearner.algorithms.decisiontrees.tdt.TDTClassifier

All Implemented Interfaces:

ClassExpressionLearningAlgorithm, Component, LearningAlgorithm, StoppableLearningAlgorithm

public class TDTClassifier
extends AbstractTDTClassifier

Field Summary

Fields inherited from class org.dllearner.core.AbstractCELA

MAX_NR_OF_RESULTS

Constructor Summary

Constructors

Constructor and Description
TDTClassifier() Empty constructor for Spring
TDTClassifier(AbstractClassExpressionLearningProblem problem, AbstractReasonerComponent reasoner, RefinementOperator op)

Method Summary

Modifier and Type	Method and Description
org.semanticweb.owlapi.model.OWLClassExpression	deriveDefinition(DLTree model) Procedure for deriving a concept description from a TDT classifier
org.semanticweb.owlapi.model.OWLClassExpression	getCurrentlyBestDescription()
EvaluatedDescription	getCurrentlyBestEvaluatedDescription() Returns the best descriptions obtained so far.
DLTree	getCurrentmodel()
DLTree	induceDLTree(SortedSet<org.semanticweb.owlapi.model.OWLIndividual> posExs, SortedSet<org.semanticweb.owlapi.model.OWLIndividual> negExs, SortedSet<org.semanticweb.owlapi.model.OWLIndividual> undExs)
void	init() Method to be called after the component has been configured.
void	start() Starts the algorithm.

Methods inherited from class org.dllearner.algorithms.decisiontrees.tdt.AbstractTDTClassifier

classify, classifyExample, classifyExample, getClassToDescribe, getHeuristic, getOperator, getPuritythreshold, isBinaryClassification, isCcp, isMissingValueTreatmentForTDT, isRunning, setBinaryClassification, setCcp, setClassToDescribe, setHeuristic, setMissingValueTreatmentForTDT, setOperator, setPuritythreshold, stop

Methods inherited from class org.dllearner.core.AbstractCELA

changeLearningProblem, changeReasonerComponent, getAllowedConcepts, getAllowedDataProperties, getAllowedObjectProperties, getCurrentlyBestDescriptions, getCurrentlyBestDescriptions, getCurrentlyBestDescriptions, getCurrentlyBestEvaluatedDescriptions, getCurrentlyBestEvaluatedDescriptions, getCurrentlyBestEvaluatedDescriptions, getCurrentlyBestEvaluatedDescriptions, getCurrentlyBestMostGeneralEvaluatedDescriptions, getIgnoredConcepts, getIgnoredDataProperties, getIgnoredObjectProperties, getLearningProblem, getMaxExecutionTimeInSeconds, getReasoner, isUseMinimizer, setAllowedConcepts, setAllowedDataProperties, setAllowedObjectProperties, setIgnoredConcepts, setIgnoredDataProperties, setIgnoredObjectProperties, setLearningProblem, setMaxExecutionTime, setMaxExecutionTimeInSeconds, setReasoner, setRenderer, setUseMinimizer, 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

TDTClassifier

public TDTClassifier()

Empty constructor for Spring

TDTClassifier

public TDTClassifier(AbstractClassExpressionLearningProblem problem,
                     AbstractReasonerComponent reasoner,
                     RefinementOperator op)

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.

Specified by:

init in interface Component

Overrides:

init in class AbstractTDTClassifier

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).

induceDLTree

public DLTree induceDLTree(SortedSet<org.semanticweb.owlapi.model.OWLIndividual> posExs,
                           SortedSet<org.semanticweb.owlapi.model.OWLIndividual> negExs,
                           SortedSet<org.semanticweb.owlapi.model.OWLIndividual> undExs)

Specified by:

induceDLTree in class AbstractTDTClassifier

deriveDefinition

public org.semanticweb.owlapi.model.OWLClassExpression deriveDefinition(DLTree model)

Procedure for deriving a concept description from a TDT classifier

Parameters:

model -

Returns:

start

public void start()

Description copied from interface: LearningAlgorithm

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

Specified by:

start in interface LearningAlgorithm

Overrides:

start in class AbstractTDTClassifier

getCurrentlyBestDescription

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

Overrides:

getCurrentlyBestDescription in class AbstractCELA

Returns:

The best class OWLClassExpression found by the learning algorithm so far.

See Also:

AbstractCELA.getCurrentlyBestEvaluatedDescription()

getCurrentlyBestEvaluatedDescription

public EvaluatedDescription getCurrentlyBestEvaluatedDescription()

Description copied from class: AbstractCELA

Returns the best descriptions obtained so far.

Overrides:

getCurrentlyBestEvaluatedDescription in class AbstractCELA

Returns:

Best class class expression found so far.

getCurrentmodel

public DLTree getCurrentmodel()