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

Class BrownClusterFeatureExtractor

java.lang.Object

edu.illinois.cs.cogcomp.edison.features.WordFeatureExtractor

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

All Implemented Interfaces:

FeatureExtractor

public class BrownClusterFeatureExtractor
extends WordFeatureExtractor

A WordFeatureExtractor that generates prefixes of brown cluster Ids for each word. Using BrownClusterViewGenerator, which now supports multiple Brown cluster sources to be used simultaneously.

Author:

Vivek Srikumar

See Also:

WordFeatureExtractor

Field Summary

Fields

Modifier and Type	Field and Description
static BrownClusterFeatureExtractor	instance100
static BrownClusterFeatureExtractor	instance1000
static BrownClusterFeatureExtractor	instance320
static BrownClusterFeatureExtractor	instance3200
static int[]	prefixes

Constructor Summary

Constructors

Constructor and Description
BrownClusterFeatureExtractor(String name, String brownClustersFile, int[] prefixLengths)
BrownClusterFeatureExtractor(String name, String brownClustersFile, int[] prefixLengths, boolean useLastWord)

Method Summary

Modifier and Type	Method and Description
String	getName()
BrownClusterViewGenerator	getViewGenerator()
Set<Feature>	getWordFeatures(TextAnnotation ta, int wordPosition)

Methods inherited from class edu.illinois.cs.cogcomp.edison.features.WordFeatureExtractor

convertToWordFeatureExtractor, getFeatures

Methods inherited from class java.lang.Object

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

Field Detail

instance100

public static final BrownClusterFeatureExtractor instance100

instance320

public static final BrownClusterFeatureExtractor instance320

instance1000

public static final BrownClusterFeatureExtractor instance1000

instance3200

public static final BrownClusterFeatureExtractor instance3200

prefixes

public static final int[] prefixes

Constructor Detail

BrownClusterFeatureExtractor

public BrownClusterFeatureExtractor(String name,
                                    String brownClustersFile,
                                    int[] prefixLengths)
                             throws EdisonException

Throws:

EdisonException

BrownClusterFeatureExtractor

public BrownClusterFeatureExtractor(String name,
                                    String brownClustersFile,
                                    int[] prefixLengths,
                                    boolean useLastWord)
                             throws EdisonException

Throws:

EdisonException

See Also:

WordFeatureExtractor.WordFeatureExtractor(boolean)

Method Detail

getViewGenerator

public BrownClusterViewGenerator getViewGenerator()
                                           throws EdisonException

Throws:

EdisonException

getWordFeatures

public Set<Feature> getWordFeatures(TextAnnotation ta,
                                    int wordPosition)
                             throws EdisonException

Specified by:

getWordFeatures in class WordFeatureExtractor

Throws:

EdisonException

getName

public String getName()

Specified by:

getName in interface FeatureExtractor

Overrides:

getName in class WordFeatureExtractor