edu.washington.cs.knowitall.nlp
Class OpenNlpSentenceChunker

java.lang.Object
  edu.washington.cs.knowitall.nlp.OpenNlpSentenceChunker

All Implemented Interfaces:

SentenceChunker

public class OpenNlpSentenceChunker
extends Object
implements SentenceChunker

A class that combines OpenNLP tokenizer, POS tagger, and chunker objects into a single object that converts String sentences to ChunkedSentence objects. By default, uses the models from DefaultObjects.getDefaultTokenizer(), DefaultObjects.getDefaultPosTagger(), and DefaultObjects.getDefaultChunker().

Author:

afader

Constructor Summary

OpenNlpSentenceChunker()
Constructs a new object using the default models from DefaultObjects.

OpenNlpSentenceChunker(opennlp.tools.tokenize.Tokenizer tokenizer, opennlp.tools.postag.POSTagger posTagger, opennlp.tools.chunker.Chunker chunker)
Constructs a new OpenNlpSentenceChunker object using the provided OpenNLP objects.

Method Summary

boolean	attachOfs()
void	attachOfs(boolean attachOfs)
boolean	attachPossessives()
void	attachPossessives(boolean attachPossessives)
ChunkedSentence	chunkSentence(String sent)

Methods inherited from class java.lang.Object

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

Constructor Detail

OpenNlpSentenceChunker

public OpenNlpSentenceChunker()
                       throws IOException

Constructs a new object using the default models from DefaultObjects.

Throws:

IOException - if unable to load the models.

OpenNlpSentenceChunker

public OpenNlpSentenceChunker(opennlp.tools.tokenize.Tokenizer tokenizer,
                              opennlp.tools.postag.POSTagger posTagger,
                              opennlp.tools.chunker.Chunker chunker)

Constructs a new OpenNlpSentenceChunker object using the provided OpenNLP objects.

Parameters:

tokenizer -

posTagger -

chunker -

Method Detail

attachOfs

public boolean attachOfs()

Returns:

true if this object will attach NPs beginning with "of" with the previous NP.

attachPossessives

public boolean attachPossessives()

Returns:

true if this object will attach NPs beginning with the tag POS with the previous NP.

attachOfs

public void attachOfs(boolean attachOfs)

Parameters:

attachOfs -

attachPossessives

public void attachPossessives(boolean attachPossessives)

Parameters:

attachPossessives -

chunkSentence

public ChunkedSentence chunkSentence(String sent)
                              throws ChunkerException

Specified by:

chunkSentence in interface SentenceChunker

Throws:

ChunkerException