org.dllearner.utilities.owl

Class EvaluatedDescriptionSet

java.lang.Object

org.dllearner.utilities.owl.EvaluatedDescriptionSet

public class EvaluatedDescriptionSet
extends Object

A set of evaluated descriptions, which is bound by a maximum size. Can be used by algorithms to store the most promising n class descriptions.

Author:

Jens Lehmann

Constructor Summary

Constructors

Constructor and Description
EvaluatedDescriptionSet(int maxSize)

Method Summary

Modifier and Type	Method and Description
void	add(EvaluatedDescription<? extends Score> ed) Adds an evaluated description to this set and ensures that the size does not exceed the limit.
void	add(org.semanticweb.owlapi.model.OWLClassExpression description, double accuracy, AbstractClassExpressionLearningProblem<? extends Score> problem) Adds an class expression to this set.
void	addAll(Collection<EvaluatedDescriptionPosNeg> eds) Adds a collection of evaluated description to this set and ensures that the size does not exceed the limit.
EvaluatedDescription<? extends Score>	getBest()
double	getBestAccuracy()
int	getMaxSize()
NavigableSet<EvaluatedDescription<? extends Score>>	getSet()
EvaluatedDescription<? extends Score>	getWorst()
boolean	isEmpty()
boolean	isFull()
int	size()
List<org.semanticweb.owlapi.model.OWLClassExpression>	toDescriptionList()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

EvaluatedDescriptionSet

public EvaluatedDescriptionSet(int maxSize)

Parameters:

maxSize - the maximum number of elements contained in this set

Method Detail

add

public void add(org.semanticweb.owlapi.model.OWLClassExpression description,
                double accuracy,
                AbstractClassExpressionLearningProblem<? extends Score> problem)

Adds an class expression to this set. Some kind of lazy evaluation is applied, i.e. an evaluated description is only generated if the given accuracy is higher than the accuracy value of the worst evaluated description contained in this set.

Parameters:

description - the class expression

accuracy - the accuracy of the class expression

problem - the learning problem

add

public void add(EvaluatedDescription<? extends Score> ed)

Adds an evaluated description to this set and ensures that the size does not exceed the limit.

Parameters:

ed - the evaluated description to add

addAll

public void addAll(Collection<EvaluatedDescriptionPosNeg> eds)

Adds a collection of evaluated description to this set and ensures that the size does not exceed the limit.

Parameters:

eds - the evaluated descriptions to add

isFull

public boolean isFull()

Returns:

true if this set with a maximum size of n contains n elements.

isEmpty

public boolean isEmpty()

Returns:

true if this set contains no elements.

size

public int size()

Returns:

the size of this set

getBest

public EvaluatedDescription<? extends Score> getBest()

Returns:

the best evaluated description or null if this set is empty.

getWorst

public EvaluatedDescription<? extends Score> getWorst()

Returns:

the worst evaluated description or null if this set is empty.

getBestAccuracy

public double getBestAccuracy()

Returns:

the best accuracy so far or -Infinity if this set is empty.

getSet

public NavigableSet<EvaluatedDescription<? extends Score>> getSet()

Returns:

the underlying set of evaluated descriptions.

toDescriptionList

public List<org.semanticweb.owlapi.model.OWLClassExpression> toDescriptionList()

Returns:

a list which contains only the class expressions of this set.

getMaxSize

public int getMaxSize()

Returns:

the maximum size of this set.

toString

public String toString()

Overrides:

toString in class Object