dragon.nlp.ontology

Interface Vocabulary

All Known Implementing Classes:

AbstractVocabulary, BasicVocabulary, ChineseVocabulary

public interface Vocabulary

Inerface of Phrase Dictionary

Copyright: Copyright (c) 2005

Company: IST, Drexel University

Version:

1.0

Author:

Davis Zhou

Method Summary

Modifier and Type	Method and Description
Word	findPhrase(Word start) Finds out the phrase beging with the given word.
boolean	getAdjectivePhraseOption() Gets the option whether adjective phrase is allowed.
boolean	getCoordinateOption() Gets the option whether a phrase can contain a conjunction.
boolean	getLemmaOption() Gets the option of using the base form of the word when matching a phrase.
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.
boolean	isPhrase(String term) Tests if the term is a phrase
boolean	isPhrase(Word start, Word end) Tests if the term specified by the starting word and the ending word is a prhase.
boolean	isStartingWord(Word cur) Tests if the specified word could be the starting a word of a phrase.
int	maxPhraseLength() Gets the maximum number of words a phrase can contain.
int	minPhraseLength() Gets the minimum number of words a phrase can contain.
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	setNPPOption(boolean enabled) Sets the option whether NPP phrase is allowed.

Method Detail

isPhrase

boolean isPhrase(String term)

Tests if the term is a phrase

Parameters:

term - the term for testing

Returns:

true if the term is a phrase defined in the vocabulary

isPhrase

boolean isPhrase(Word start,
                 Word end)

Tests if the term specified by the starting word and the ending word is a prhase.

Parameters:

start - the starting word of the phrase

end - the ending word of the phrase

Returns:

true if the term is a phrase defined in the vocabulary

isStartingWord

boolean isStartingWord(Word cur)

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

Parameters:

cur - the current word for testing

Returns:

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

findPhrase

Word findPhrase(Word start)

Finds out the phrase beging with the given word.

Parameters:

start - the starting word

Returns:

the ending word if a phrase is matched; otherwise null.

getPhraseNum

int getPhraseNum()

Gets the number of phrases in the vocabulary.

Returns:

the number of phrases in the vocabulary.

getPhrase

String getPhrase(int index)

Gets the index-th phrase in the vocabulary.

Parameters:

index - the position of the phrase in the vocabulary

Returns:

the phrase in the given position of the vocabulary.

maxPhraseLength

int maxPhraseLength()

Gets the maximum number of words a phrase can contain.

Returns:

the maximum number of words a phrase can contain.

minPhraseLength

int minPhraseLength()

Gets the minimum number of words a phrase can contain.

Returns:

the minimum number of words a phrase can contain.

setAdjectivePhraseOption

void setAdjectivePhraseOption(boolean enabled)

Sets the option whether adjective phrase is allowed.

Parameters:

enabled - whether adjective phrase is allowed.

getAdjectivePhraseOption

boolean getAdjectivePhraseOption()

Gets the option whether adjective phrase is allowed.

Returns:

true if adjective phrase is allowed.

setNPPOption

void setNPPOption(boolean enabled)

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

Parameters:

enabled - the option whether NPP phrase is allowed.

getNPPOption

boolean getNPPOption()

Gets the option whether NPP phrase is allowed.

Returns:

true if NPP phrase is allowed.

setCoordinateOption

void setCoordinateOption(boolean enabled)

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

Parameters:

enabled - the option whether a phrase can contain a conjunction

getCoordinateOption

boolean getCoordinateOption()

Gets the option whether a phrase can contain a conjunction.

Returns:

true if a phrase can contain a conjunction.

setLemmaOption

void setLemmaOption(boolean enabled)

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

Parameters:

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

getLemmaOption

boolean getLemmaOption()

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

Returns:

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