opennlp.tools.coref.mention
Class AbstractMentionFinder

java.lang.Object
  opennlp.tools.coref.mention.AbstractMentionFinder

All Implemented Interfaces:

MentionFinder

Direct Known Subclasses:

PTBMentionFinder, ShallowParseMentionFinder

public abstract class AbstractMentionFinder
extends Object
implements MentionFinder

Provides default implementation of many of the methods in the MentionFinder interface.

Field Summary

protected boolean	collectCoordinatedNounPhrases
protected boolean	collectPrenominalNamedEntities
protected HeadFinder	headFinder

Constructor Summary

AbstractMentionFinder()

Method Summary

protected Map<Parse,Parse>	constructHeadMap(List<Parse> nps) Assigns head relations between noun phrases and the child np which is their head.
Mention[]	getMentions(Parse p) Returns an array of mentions.
List<Parse>	getNamedEntities(Parse p) Return all noun phrases which are contained by p.
protected boolean	isBasalNounPhrase(Parse np)
protected boolean	isConjoinedBasal(Parse np)
boolean	isCoordinatedNounPhraseCollection() Returns whether this mention finder collects coordinated noun phrases as mentions.
protected boolean	isOfPrepPhrase(Parse np)
protected boolean	isPossessive(Parse np)
boolean	isPrenominalNamedEntityCollection() Returns whether this mention finder collects pre-nominal named-entities as mentions.
void	setCoordinatedNounPhraseCollection(boolean b) Specifies whether coordinated noun phrases should be collected as mentions.
void	setPrenominalNamedEntityCollection(boolean b) Specifies whether pre-nominal named-entities should be collected as mentions.

Methods inherited from class java.lang.Object

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

Field Detail

headFinder

protected HeadFinder headFinder

collectPrenominalNamedEntities

protected boolean collectPrenominalNamedEntities

collectCoordinatedNounPhrases

protected boolean collectCoordinatedNounPhrases

Constructor Detail

AbstractMentionFinder

public AbstractMentionFinder()

Method Detail

constructHeadMap

protected Map<Parse,Parse> constructHeadMap(List<Parse> nps)

Assigns head relations between noun phrases and the child np which is their head.

Parameters:

nps - List of valid nps for this mention finder.

Returns:

mapping from noun phrases and the child np which is their head

isPrenominalNamedEntityCollection

public boolean isPrenominalNamedEntityCollection()

Description copied from interface: MentionFinder

Returns whether this mention finder collects pre-nominal named-entities as mentions.

Specified by:

isPrenominalNamedEntityCollection in interface MentionFinder

Returns:

true if this mention finder collects pre-nominal named-entities as mentions

setPrenominalNamedEntityCollection

public void setPrenominalNamedEntityCollection(boolean b)

Description copied from interface: MentionFinder

Specifies whether pre-nominal named-entities should be collected as mentions.

Specified by:

setPrenominalNamedEntityCollection in interface MentionFinder

Parameters:

b - true if pre-nominal named-entities should be collected; false otherwise.

isBasalNounPhrase

protected boolean isBasalNounPhrase(Parse np)

isPossessive

protected boolean isPossessive(Parse np)

isOfPrepPhrase

protected boolean isOfPrepPhrase(Parse np)

isConjoinedBasal

protected boolean isConjoinedBasal(Parse np)

getNamedEntities

public List<Parse> getNamedEntities(Parse p)

Return all noun phrases which are contained by p.

Parameters:

p - The parse in which to find the noun phrases.

Returns:

A list of Parse objects which are noun phrases contained by p.

getMentions

public Mention[] getMentions(Parse p)

Description copied from interface: MentionFinder

Returns an array of mentions.

Specified by:

getMentions in interface MentionFinder

Parameters:

p - A top level parse from which mentions are gathered.

Returns:

an array of mentions which implement the Extent interface.

isCoordinatedNounPhraseCollection

public boolean isCoordinatedNounPhraseCollection()

Description copied from interface: MentionFinder

Returns whether this mention finder collects coordinated noun phrases as mentions.

Specified by:

isCoordinatedNounPhraseCollection in interface MentionFinder

Returns:

true if this mention finder collects coordinated noun phrases as mentions; false otherwise.

setCoordinatedNounPhraseCollection

public void setCoordinatedNounPhraseCollection(boolean b)

Description copied from interface: MentionFinder

Specifies whether coordinated noun phrases should be collected as mentions.

Specified by:

setCoordinatedNounPhraseCollection in interface MentionFinder

Parameters:

b - true if coordinated noun phrases should be collected; false otherwise.