dragon.nlp.ontology

Class AbstractVocabulary

java.lang.Object

dragon.nlp.ontology.AbstractVocabulary

All Implemented Interfaces:

Vocabulary

Direct Known Subclasses:

BasicVocabulary

public abstract class AbstractVocabulary
extends Object
implements Vocabulary

The class implements all the basic functions related with vocabulary

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	enable_adjterm_option
protected boolean	enable_coordinate_option
protected boolean	enable_lemma_option
protected boolean	enable_npp_option
protected Lemmatiser	lemmatiser
protected SimpleElementList	list
protected int	maxPhraseLength
protected int	minPhraseLength
protected String	nonboundaryPunctuations

Constructor Summary

Constructors

Constructor and Description
AbstractVocabulary(String termFilename)
AbstractVocabulary(String termFilename, Lemmatiser lemmatiser)

Method Summary

Modifier and Type	Method and Description
protected String	buildString(Word start, Word end, boolean useLemma)
boolean	getAdjectivePhraseOption() Gets the option whether adjective phrase is allowed.
boolean	getCoordinateOption() Gets the option whether a phrase can contain a conjunction.
protected String	getLemma(Word word)
boolean	getLemmaOption() Gets the option of using the base form of the word when matching a phrase.
String	getNonBoundaryPunctuation()
boolean	getNPPOption() Gets the option whether NPP phrase is allowed.
String	getPhrase(int index) Gets the index-th phrase in the vocabulary.
int	getPhraseNum() Gets the number of phrases in the vocabulary.
protected boolean	isBoundaryWord(Word curWord)
boolean	isStartingWord(Word cur) Tests if the specified word could be the starting a word of a phrase.
protected boolean	isUsefulForPhrase(Word word)
int	maxPhraseLength() Gets the maximum number of words a phrase can contain.
int	minPhraseLength() Gets the minimum number of words a phrase can contain.
protected void	readVocabularyMeta(String termFilename)
void	setAdjectivePhraseOption(boolean enabled) Sets the option whether adjective phrase is allowed.
void	setCoordinateOption(boolean enabled) Sets the option whether a phrase can contain a conjunction.
void	setLemmaOption(boolean enabled) Sets the option of using the base form of the word when matching a phrase.
void	setNonBoundaryPunctuation(String punctuations)
void	setNPPOption(boolean enabled) Sets the option whether NPP phrase is allowed.

Methods inherited from class java.lang.Object

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

Methods inherited from interface dragon.nlp.ontology.Vocabulary

findPhrase, isPhrase, isPhrase

Field Detail

lemmatiser

protected Lemmatiser lemmatiser

enable_npp_option

protected boolean enable_npp_option

enable_coordinate_option

protected boolean enable_coordinate_option

enable_adjterm_option

protected boolean enable_adjterm_option

enable_lemma_option

protected boolean enable_lemma_option

nonboundaryPunctuations

protected String nonboundaryPunctuations

list

protected SimpleElementList list

maxPhraseLength

protected int maxPhraseLength

minPhraseLength

protected int minPhraseLength

Constructor Detail

AbstractVocabulary

public AbstractVocabulary(String termFilename)

AbstractVocabulary

public AbstractVocabulary(String termFilename,
                          Lemmatiser lemmatiser)

Method Detail

getPhraseNum

public int getPhraseNum()

Description copied from interface: Vocabulary

Gets the number of phrases in the vocabulary.

Specified by:

getPhraseNum in interface Vocabulary

Returns:

the number of phrases in the vocabulary.

getPhrase

public String getPhrase(int index)

Description copied from interface: Vocabulary

Gets the index-th phrase in the vocabulary.

Specified by:

getPhrase in interface Vocabulary

Parameters:

index - the position of the phrase in the vocabulary

Returns:

the phrase in the given position of the vocabulary.

maxPhraseLength

public int maxPhraseLength()

Description copied from interface: Vocabulary

Gets the maximum number of words a phrase can contain.

Specified by:

maxPhraseLength in interface Vocabulary

Returns:

the maximum number of words a phrase can contain.

minPhraseLength

public int minPhraseLength()

Description copied from interface: Vocabulary

Gets the minimum number of words a phrase can contain.

Specified by:

minPhraseLength in interface Vocabulary

Returns:

the minimum number of words a phrase can contain.

setNonBoundaryPunctuation

public void setNonBoundaryPunctuation(String punctuations)

getNonBoundaryPunctuation

public String getNonBoundaryPunctuation()

setLemmaOption

public void setLemmaOption(boolean enabled)

Description copied from interface: Vocabulary

Sets the option of using the base form of the word when matching a phrase.

Specified by:

setLemmaOption in interface Vocabulary

Parameters:

enabled - the option of using the base form of the word when matching a phrase.

getLemmaOption

public boolean getLemmaOption()

Description copied from interface: Vocabulary

Gets the option of using the base form of the word when matching a phrase.

Specified by:

getLemmaOption in interface Vocabulary

Returns:

true if the base form of words is used when matching a phrase.

setAdjectivePhraseOption

public void setAdjectivePhraseOption(boolean enabled)

Description copied from interface: Vocabulary

Sets the option whether adjective phrase is allowed.

Specified by:

setAdjectivePhraseOption in interface Vocabulary

Parameters:

enabled - whether adjective phrase is allowed.

getAdjectivePhraseOption

public boolean getAdjectivePhraseOption()

Description copied from interface: Vocabulary

Gets the option whether adjective phrase is allowed.

Specified by:

getAdjectivePhraseOption in interface Vocabulary

Returns:

true if adjective phrase is allowed.

setNPPOption

public void setNPPOption(boolean enabled)

Description copied from interface: Vocabulary

Sets the option whether NPP phrase is allowed. For example, "bank of america" is a NPP phrase

Specified by:

setNPPOption in interface Vocabulary

Parameters:

enabled - the option whether NPP phrase is allowed.

getNPPOption

public boolean getNPPOption()

Description copied from interface: Vocabulary

Gets the option whether NPP phrase is allowed.

Specified by:

getNPPOption in interface Vocabulary

Returns:

true if NPP phrase is allowed.

setCoordinateOption

public void setCoordinateOption(boolean enabled)

Description copied from interface: Vocabulary

Sets the option whether a phrase can contain a conjunction. For example, the phrase "the cancer of neck and hand" contains a conjunction.

Specified by:

setCoordinateOption in interface Vocabulary

Parameters:

enabled - the option whether a phrase can contain a conjunction

getCoordinateOption

public boolean getCoordinateOption()

Description copied from interface: Vocabulary

Gets the option whether a phrase can contain a conjunction.

Specified by:

getCoordinateOption in interface Vocabulary

Returns:

true if a phrase can contain a conjunction.

isStartingWord

public boolean isStartingWord(Word cur)

Description copied from interface: Vocabulary

Tests if the specified word could be the starting a word of a phrase.

Specified by:

isStartingWord in interface Vocabulary

Parameters:

cur - the current word for testing

Returns:

true if the current word could be the starting a word of a phrase

isBoundaryWord

protected boolean isBoundaryWord(Word curWord)

getLemma

protected String getLemma(Word word)

buildString

protected String buildString(Word start,
                             Word end,
                             boolean useLemma)

isUsefulForPhrase

protected boolean isUsefulForPhrase(Word word)

readVocabularyMeta

protected void readVocabularyMeta(String termFilename)