edu.washington.cs.knowitall.normalization
Class HeadNounNormalizer

java.lang.Object
  edu.washington.cs.knowitall.normalization.HeadNounNormalizer

All Implemented Interfaces:

FieldNormalizer

public class HeadNounNormalizer
extends Object
implements FieldNormalizer

A normalizer function that heuristically finds the head noun phrase of an argument field. It uses the following heuristic method:

• If the field contains a proper noun, don't normalize
• If the field contains a tag starting with N, return the rightmost one, stemmed
• Otherwise, don't normalize

This is a much simpler version of Magerman's rules for finding head words in a syntactic parse tree.

Author:

afader

Constructor Summary

HeadNounNormalizer()

Method Summary

NormalizedField

normalizeField(ChunkedExtraction field)

Methods inherited from class java.lang.Object

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

Constructor Detail

HeadNounNormalizer

public HeadNounNormalizer()

Method Detail

normalizeField

public NormalizedField normalizeField(ChunkedExtraction field)

Specified by:

normalizeField in interface FieldNormalizer

Returns:

a normalized version of the given field