org.dllearner.algorithms.qtl.util.filters

Class PredicateExistenceFilter

java.lang.Object

org.dllearner.algorithms.qtl.util.filters.AbstractTreeFilter<RDFResourceTree>

org.dllearner.algorithms.qtl.util.filters.PredicateExistenceFilter

All Implemented Interfaces:

TreeFilter<RDFResourceTree>

Direct Known Subclasses:

PredicateExistenceFilterDBpedia

public class PredicateExistenceFilter
extends AbstractTreeFilter<RDFResourceTree>

A query tree filter that removes edges whose existence is supposed to be semantically meaningless from user perspective.

Author:

Lorenz Buehmann

Constructor Summary

Constructors

Constructor and Description
PredicateExistenceFilter()
PredicateExistenceFilter(Set<org.apache.jena.graph.Node> existentialMeaninglessProperties)

Method Summary

Modifier and Type	Method and Description
RDFResourceTree	apply(RDFResourceTree tree) Apply the filter and return a new filtered tree.
boolean	isMeaningless(org.apache.jena.graph.Node predicate)
void	setExistentialMeaninglessProperties(Set<org.apache.jena.graph.Node> existentialMeaninglessProperties)

Methods inherited from class org.dllearner.algorithms.qtl.util.filters.AbstractTreeFilter

getNodes2Keep, setNodes2Keep

Methods inherited from class java.lang.Object

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

Constructor Detail

PredicateExistenceFilter

public PredicateExistenceFilter()

PredicateExistenceFilter

public PredicateExistenceFilter(Set<org.apache.jena.graph.Node> existentialMeaninglessProperties)

Method Detail

setExistentialMeaninglessProperties

public void setExistentialMeaninglessProperties(Set<org.apache.jena.graph.Node> existentialMeaninglessProperties)

Parameters:

existentialMeaninglessProperties - the existential meaningless properties

isMeaningless

public boolean isMeaningless(org.apache.jena.graph.Node predicate)

apply

public RDFResourceTree apply(RDFResourceTree tree)

Description copied from interface: TreeFilter

Apply the filter and return a new filtered tree.

Parameters:

tree - the input tree

Returns:

a new filtered tree