edu.umass.cs.mallet.base.types

Class FeatureConjunction

java.lang.Object

edu.umass.cs.mallet.base.types.FeatureConjunction

All Implemented Interfaces:

Serializable

public class FeatureConjunction
extends Object
implements Serializable

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	FeatureConjunction.List

Constructor Summary

Constructors

Constructor and Description
FeatureConjunction(Alphabet dictionary, int[] features)
FeatureConjunction(Alphabet dictionary, int[] features, boolean[] negations)
FeatureConjunction(String name, Alphabet dictionary, int[] features, boolean[] negations)
FeatureConjunction(String name, Alphabet dictionary, int[] features, boolean[] negations, boolean checkSorted)
FeatureConjunction(String name, Alphabet dictionary, int[] features, boolean[] negations, boolean checkSorted, boolean copyFeatures, boolean copyNegations) If negations[i] is true, insist that the feature has non-zero value; if false, insist that it has zero value.

Method Summary

Modifier and Type	Method and Description
void	addTo(AugmentableFeatureVector fv)
void	addTo(AugmentableFeatureVector fv, double value)
void	addTo(AugmentableFeatureVector fv, double value, FeatureSelection fs)
static boolean	featuresOverlap(Alphabet dictionary, int feature1, int feature2)
static int[]	getFeatureIndices(Alphabet dictionary, String featureConjunctionName)
int	getIndex()
static String	getName(Alphabet dictionary, int[] features)
static String	getName(Alphabet dictionary, int[] features, boolean[] negations)
static String	getName(Alphabet dictionary, int feature1, int feature2)
static boolean	isValidConjunction(int[] features)
boolean	satisfiedBy(FeatureVector fv)

Methods inherited from class java.lang.Object

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

Constructor Detail

FeatureConjunction

public FeatureConjunction(String name,
                          Alphabet dictionary,
                          int[] features,
                          boolean[] negations,
                          boolean checkSorted,
                          boolean copyFeatures,
                          boolean copyNegations)

If negations[i] is true, insist that the feature has non-zero value; if false, insist that it has zero value. Note: Does not check to make sure that it hasn't already been added. If negations[] is null, then assume all negations[i] are true.

FeatureConjunction

public FeatureConjunction(String name,
                          Alphabet dictionary,
                          int[] features,
                          boolean[] negations,
                          boolean checkSorted)

FeatureConjunction

public FeatureConjunction(String name,
                          Alphabet dictionary,
                          int[] features,
                          boolean[] negations)

FeatureConjunction

public FeatureConjunction(Alphabet dictionary,
                          int[] features,
                          boolean[] negations)

FeatureConjunction

public FeatureConjunction(Alphabet dictionary,
                          int[] features)

Method Detail

isValidConjunction

public static boolean isValidConjunction(int[] features)

getName

public static String getName(Alphabet dictionary,
                             int[] features,
                             boolean[] negations)

getName

public static String getName(Alphabet dictionary,
                             int[] features)

featuresOverlap

public static boolean featuresOverlap(Alphabet dictionary,
                                      int feature1,
                                      int feature2)

getName

public static String getName(Alphabet dictionary,
                             int feature1,
                             int feature2)

getFeatureIndices

public static int[] getFeatureIndices(Alphabet dictionary,
                                      String featureConjunctionName)

satisfiedBy

public boolean satisfiedBy(FeatureVector fv)

getIndex

public int getIndex()

addTo

public void addTo(AugmentableFeatureVector fv,
                  double value,
                  FeatureSelection fs)

addTo

public void addTo(AugmentableFeatureVector fv,
                  double value)

addTo

public void addTo(AugmentableFeatureVector fv)