dragon.nlp.extract

Class AbstractPhraseExtractor

java.lang.Object

dragon.nlp.extract.AbstractConceptExtractor

dragon.nlp.extract.AbstractPhraseExtractor

All Implemented Interfaces:

ConceptExtractor, PhraseExtractor

Direct Known Subclasses:

BasicPhraseExtractor

public abstract class AbstractPhraseExtractor
extends AbstractConceptExtractor
implements PhraseExtractor

Abstract class for phrase extraction

Copyright: Copyright (c) 2005

Company: IST, Drexel University

Version:

1.0

Author:

Davis Zhou

Field Summary

Fields

Modifier and Type	Field and Description
protected Lemmatiser	lemmatiser
protected Tagger	tagger
protected boolean	useAdj
protected boolean	useNoun
protected boolean	useVerb
protected Vocabulary	vocabulary

Fields inherited from class dragon.nlp.extract.AbstractConceptExtractor

cf, conceptFilter_enabled, conceptList, parser, subconcept_enabled

Constructor Summary

Constructors

Constructor and Description
AbstractPhraseExtractor(Vocabulary vocabulary, Tagger tagger, Lemmatiser lemmatiser)

Method Summary

Modifier and Type	Method and Description
Lemmatiser	getLemmatiser() Gets the lemmtiser used for this extractor.
Tagger	getPOSTagger() Gets the part of speech tagger used for the phrase extractor
boolean	getSingleAdjectiveOption() Tests if the single-word adjectives will be extracted.
boolean	getSingleNounOption() Tests if the single-word nouns will be extracted.
boolean	getSingleVerbOption() Tests if the single-word verbs will be extracted.
Vocabulary	getVocabulary() Gets the phrase dictionary
void	initDocExtraction() It is required to call this method before one calls extractFromDoc method.
void	setLemmatiser(Lemmatiser lemmatiser) Sets lemmatiser for this extractor.
void	setSingleAdjectiveOption(boolean option) Sets the option of extracting single-word adjectives.
void	setSingleNounOption(boolean option) Sets the option of extracting single-word nouns.
void	setSingleVerbOption(boolean option) Sets the option of extracting single-word verbs.
boolean	supportConceptEntry() Tests if the extracted concept has an entry ID.
boolean	supportConceptName() Tests if the extracted concept has a name.

Methods inherited from class dragon.nlp.extract.AbstractConceptExtractor

extractFromDoc, extractFromDoc, getConceptFilter, getConceptList, getDocumentParser, getFilteringOption, getSubConceptOption, mergeConceptByEntryID, mergeConceptByName, print, print, setConceptFilter, setDocumentParser, setFilteringOption, setSubConceptOption

Methods inherited from class java.lang.Object

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

Methods inherited from interface dragon.nlp.extract.ConceptExtractor

extractFromDoc, extractFromDoc, extractFromSentence, getConceptFilter, getConceptList, getDocumentParser, getFilteringOption, getSubConceptOption, mergeConceptByEntryID, mergeConceptByName, print, print, setConceptFilter, setDocumentParser, setFilteringOption, setSubConceptOption

Field Detail

lemmatiser

protected Lemmatiser lemmatiser

tagger

protected Tagger tagger

vocabulary

protected Vocabulary vocabulary

useNoun

protected boolean useNoun

useAdj

protected boolean useAdj

useVerb

protected boolean useVerb

Constructor Detail

AbstractPhraseExtractor

public AbstractPhraseExtractor(Vocabulary vocabulary,
                               Tagger tagger,
                               Lemmatiser lemmatiser)

Method Detail

setSingleNounOption

public void setSingleNounOption(boolean option)

Description copied from interface: PhraseExtractor

Sets the option of extracting single-word nouns.

Specified by:

setSingleNounOption in interface PhraseExtractor

Parameters:

option - the option of extracting single-word nouns

getSingleNounOption

public boolean getSingleNounOption()

Description copied from interface: PhraseExtractor

Tests if the single-word nouns will be extracted.

Specified by:

getSingleNounOption in interface PhraseExtractor

Returns:

true if the single-word nouns will be extracted.

setSingleVerbOption

public void setSingleVerbOption(boolean option)

Description copied from interface: PhraseExtractor

Sets the option of extracting single-word verbs.

Specified by:

setSingleVerbOption in interface PhraseExtractor

Parameters:

option - the option of extracting single-word verbs

getSingleVerbOption

public boolean getSingleVerbOption()

Description copied from interface: PhraseExtractor

Tests if the single-word verbs will be extracted.

Specified by:

getSingleVerbOption in interface PhraseExtractor

Returns:

true if the single-word verbs will be extracted.

setSingleAdjectiveOption

public void setSingleAdjectiveOption(boolean option)

Description copied from interface: PhraseExtractor

Sets the option of extracting single-word adjectives.

Specified by:

setSingleAdjectiveOption in interface PhraseExtractor

Parameters:

option - the option of extracting single-word adjectives

getSingleAdjectiveOption

public boolean getSingleAdjectiveOption()

Description copied from interface: PhraseExtractor

Tests if the single-word adjectives will be extracted.

Specified by:

getSingleAdjectiveOption in interface PhraseExtractor

Returns:

true if the single-word adjectives will be extracted.

supportConceptName

public boolean supportConceptName()

Description copied from interface: ConceptExtractor

Tests if the extracted concept has a name.

Specified by:

supportConceptName in interface ConceptExtractor

Returns:

true or false

supportConceptEntry

public boolean supportConceptEntry()

Description copied from interface: ConceptExtractor

Tests if the extracted concept has an entry ID.

Specified by:

supportConceptEntry in interface ConceptExtractor

Returns:

true or false

getLemmatiser

public Lemmatiser getLemmatiser()

Description copied from interface: ConceptExtractor

Gets the lemmtiser used for this extractor.

Specified by:

getLemmatiser in interface ConceptExtractor

Returns:

the lemmatiser used

setLemmatiser

public void setLemmatiser(Lemmatiser lemmatiser)

Description copied from interface: ConceptExtractor

Sets lemmatiser for this extractor.

Specified by:

setLemmatiser in interface ConceptExtractor

Parameters:

lemmatiser - the lemmatiser

getPOSTagger

public Tagger getPOSTagger()

Description copied from interface: PhraseExtractor

Gets the part of speech tagger used for the phrase extractor

Specified by:

getPOSTagger in interface PhraseExtractor

Returns:

the part of speech tagger

getVocabulary

public Vocabulary getVocabulary()

Description copied from interface: PhraseExtractor

Gets the phrase dictionary

Specified by:

getVocabulary in interface PhraseExtractor

Returns:

the phrase dictionary

initDocExtraction

public void initDocExtraction()

Description copied from interface: ConceptExtractor

It is required to call this method before one calls extractFromDoc method.

Specified by:

initDocExtraction in interface ConceptExtractor