opennlp.tools.coref.resolver
Class DefaultNonReferentialResolver

java.lang.Object
  opennlp.tools.coref.resolver.DefaultNonReferentialResolver

All Implemented Interfaces:

NonReferentialResolver

Direct Known Subclasses:

SingletonNonReferentialResolver

public class DefaultNonReferentialResolver
extends java.lang.Object
implements NonReferentialResolver

Default implementation of the NonReferentialResolver interface.

Constructor Summary

DefaultNonReferentialResolver(java.lang.String projectName, java.lang.String name, ResolverMode mode)

Method Summary

void	addEvent(MentionContext ec) Designates that the specified mention be used for training.
protected java.util.List	getFeatures(MentionContext mention)
protected java.util.List	getNonReferentialFeatures(MentionContext mention) Returns a list of featues used to predict whether the sepcified mention is non-referential.
double	getNonReferentialProbability(MentionContext mention) Returns the probability that the specified mention doesn't refer to any previous mention.
void	train() Trains a model based on the events given to this resolver via #addEvent.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultNonReferentialResolver

public DefaultNonReferentialResolver(java.lang.String projectName,
                                     java.lang.String name,
                                     ResolverMode mode)
                              throws java.io.IOException

Throws:

java.io.IOException

Method Detail

getNonReferentialProbability

public double getNonReferentialProbability(MentionContext mention)

Description copied from interface: NonReferentialResolver

Returns the probability that the specified mention doesn't refer to any previous mention.

Specified by:

getNonReferentialProbability in interface NonReferentialResolver

Parameters:

mention - The mention under consideration.

Returns:

A probability that the specified mention doesn't refer to any previous mention.

addEvent

public void addEvent(MentionContext ec)

Description copied from interface: NonReferentialResolver

Designates that the specified mention be used for training.

Specified by:

addEvent in interface NonReferentialResolver

Parameters:

ec - The mention to be used. The mention id is used to determine whether this mention is referential or non-referential.

getFeatures

protected java.util.List getFeatures(MentionContext mention)

getNonReferentialFeatures

protected java.util.List getNonReferentialFeatures(MentionContext mention)

Returns a list of featues used to predict whether the sepcified mention is non-referential.

Parameters:

mention - The mention under considereation.

Returns:

a list of featues used to predict whether the sepcified mention is non-referential.

train

public void train()
           throws java.io.IOException

Description copied from interface: NonReferentialResolver

Trains a model based on the events given to this resolver via #addEvent.

Specified by:

train in interface NonReferentialResolver

Throws:

java.io.IOException - When the model can not be written out.