dragon.nlp.extract

Class BasicPhraseExtractor

java.lang.Object

dragon.nlp.extract.AbstractConceptExtractor

dragon.nlp.extract.AbstractPhraseExtractor

dragon.nlp.extract.BasicPhraseExtractor

All Implemented Interfaces:

ConceptExtractor, PhraseExtractor

public class BasicPhraseExtractor
extends AbstractPhraseExtractor

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 boolean	overlappedPhrase

Fields inherited from class dragon.nlp.extract.AbstractPhraseExtractor

lemmatiser, tagger, useAdj, useNoun, useVerb, vocabulary

Fields inherited from class dragon.nlp.extract.AbstractConceptExtractor

cf, conceptFilter_enabled, conceptList, parser, subconcept_enabled

Constructor Summary

Constructors

Constructor and Description
BasicPhraseExtractor(Vocabulary vocabulary, Lemmatiser lemmatiser, Tagger tagger)
BasicPhraseExtractor(Vocabulary vocabulary, Lemmatiser lemmatiser, Tagger tagger, boolean overlappedPhrase)

Method Summary

Modifier and Type	Method and Description
protected Phrase	addPhrase(Word start, Word end, boolean forRelation, boolean subphrase, ArrayList phraseList)
ArrayList	extractFromSentence(Sentence sent) Extracts concepts from a sentence

Methods inherited from class dragon.nlp.extract.AbstractPhraseExtractor

getLemmatiser, getPOSTagger, getSingleAdjectiveOption, getSingleNounOption, getSingleVerbOption, getVocabulary, initDocExtraction, setLemmatiser, setSingleAdjectiveOption, setSingleNounOption, setSingleVerbOption, supportConceptEntry, supportConceptName

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

Field Detail

overlappedPhrase

protected boolean overlappedPhrase

Constructor Detail

BasicPhraseExtractor

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

BasicPhraseExtractor

public BasicPhraseExtractor(Vocabulary vocabulary,
                            Lemmatiser lemmatiser,
                            Tagger tagger,
                            boolean overlappedPhrase)

Method Detail

extractFromSentence

public ArrayList extractFromSentence(Sentence sent)

Description copied from interface: ConceptExtractor

Extracts concepts from a sentence

Parameters:

sent - the sentence for extraction

Returns:

a list of extracted concepts

addPhrase

protected Phrase addPhrase(Word start,
                           Word end,
                           boolean forRelation,
                           boolean subphrase,
                           ArrayList phraseList)