PartOfSpeechGuesser.java

package edu.northwestern.at.utils.corpuslinguistics.postagger.guesser;

/*	Please see the license information at the end of this file. */

import java.util.*;

import edu.northwestern.at.utils.*;
import edu.northwestern.at.utils.corpuslinguistics.lexicon.*;
import edu.northwestern.at.utils.corpuslinguistics.postagger.*;
import edu.northwestern.at.utils.corpuslinguistics.spellingstandardizer.*;
import edu.northwestern.at.utils.corpuslinguistics.tokenizer.*;

/**	Interface for a PartOfSpeechGuesser.
 *
 *	<p>
 *	A part of speech guesser "guesses" the probable part(s) of speech
 *	for a word which does not appear in the main lexicon.  Alternate
 *	spellings, lexical rules based upon word prefixes or suffixes,
 *	and many other approaches may be used to find potential
 *	part of speech.
 *	</p>
 */

public interface PartOfSpeechGuesser
{
	/**	Guesses part of speech for a word.
	 *
	 *	@param	word			The word.
	 *
	 *	@return					Map of part of speech tags and counts.
	 */

	 public Map<String, MutableInteger> guessPartsOfSpeech( String word );

	/**	Guesses part of speech for a word.
	 *
	 *	@param	word			The word.
	 *	@param	isFirstWord		If word is first word in a sentence.
	 *
	 *	@return					Map of part of speech tags and counts.
	 */

	 public Map<String, MutableInteger> guessPartsOfSpeech
	 (
	 	String word ,
	 	boolean isFirstWord
	 );

	/**	Guesses part of speech for a word in a sentence.
	 *
	 *	@param	sentence		Sentence as a list of words.
	 *	@param	wordIndex		The word index in the sentence.
	 *
	 *	@return					Map of part of speech tags and counts.
	 */

	public Map<String, MutableInteger> guessPartsOfSpeech
	(
		List<String> sentence ,
		int wordIndex
	);

	/**	Get spelling standardizer.
	 *
	 *	@return		The spelling standardizer.
	 */

	public SpellingStandardizer getSpellingStandardizer();

	/**	Set spelling standardizer.
	 *
	 *	@param	spellingStandardizer		The spelling standardizer.
	 */

	public void setSpellingStandardizer
	(
		SpellingStandardizer spellingStandardizer
	);

	/**	Get the word lexicon.
	 *
	 *	@return		The word lexicon.
	 */

	public Lexicon getWordLexicon();

	/**	Set the word lexicon.
	 *
	 *	@param	wordLexicon		The word lexicon.
	 */

	public void setWordLexicon( Lexicon wordLexicon );

	/**	Get the suffix lexicon.
	 *
	 *	@return		The suffix lexicon.
	 */

	public Lexicon getSuffixLexicon();

	/**	Get cached lexicon for a word.
	 *
	 *	@param		word	The word whose source lexicon we want.
	 *
	 *	@return		The lexicon for the word.
	 */

	public Lexicon getCachedLexiconForWord( String word );

	/**	Set the suffix lexicon.
	 *
	 *	@param	suffixLexicon	The suffix lexicon.
	 */

	public void setSuffixLexicon( Lexicon suffixLexicon );

	/**	Add an auxiliary word list.
	 */

	public void addAuxiliaryWordList( TaggedStrings wordList );

	/**	Get auxiliary word lists.
	 */

	public List getAuxiliaryWordLists();

	/**	Try using standardized spellings when guessing parts of speech.
	 */

	public void setTryStandardSpellings( boolean tryStandardSpellings );

	/**	Check for possessives of known nouns when guessing parts of speech.
	 */

	public void setCheckPossessives( boolean checkPossessives );
}

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