edu.illinois.cs.cogcomp.edison.features.factory

Class NomLexClassFeature

java.lang.Object

edu.illinois.cs.cogcomp.edison.features.factory.NomLexClassFeature

All Implemented Interfaces:

FeatureExtractor

public class NomLexClassFeature
extends Object
implements FeatureExtractor

Adds NomLex based features. If the input constituent contains an attribute called PredicateArgumentView.LemmaIdentifier, the corresponding value is used to identify the features. Otherwise, the lemma of the last token is used. If the lemma is not an element of NomLex, then the last token (lower cased) is tested. If NomLex does not contain the last token, then an indicator feature is added that this token is not a member of NomLex.

When the NomLex entry is found, the following features are added:

• Nom class
• For verbal and adjectival nominalizations, the underlying verb (or adjective).

Note: To use this feature, NomLexReader.nomLexFile must be set.

Author:

Vivek Srikumar

Field Summary

Fields

Modifier and Type	Field and Description
static NomLexClassFeature	instance

Constructor Summary

Constructors

Constructor and Description
NomLexClassFeature()

Method Summary

Modifier and Type	Method and Description
Set<Feature>	getFeatures(Constituent c)
String	getName()

Methods inherited from class java.lang.Object

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

Field Detail

instance

public static NomLexClassFeature instance

Constructor Detail

NomLexClassFeature

public NomLexClassFeature()

Method Detail

getFeatures

public Set<Feature> getFeatures(Constituent c)
                         throws EdisonException

Specified by:

getFeatures in interface FeatureExtractor

Throws:

EdisonException

getName

public String getName()

Specified by:

getName in interface FeatureExtractor