edu.umass.cs.mallet.base.types

Class InfoGain

java.lang.Object

edu.umass.cs.mallet.base.types.SparseVector

edu.umass.cs.mallet.base.types.FeatureVector

edu.umass.cs.mallet.base.types.RankedFeatureVector

edu.umass.cs.mallet.base.types.InfoGain

All Implemented Interfaces:

ConstantMatrix, Vector, Serializable

public class InfoGain
extends RankedFeatureVector

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	InfoGain.Factory

Nested classes/interfaces inherited from class edu.umass.cs.mallet.base.types.RankedFeatureVector

RankedFeatureVector.PerLabelFactory

Field Summary

Fields inherited from class edu.umass.cs.mallet.base.types.SparseVector

hasInfinite, indices, values

Constructor Summary

Constructors

Constructor and Description
InfoGain(Alphabet vocab, double[] infogains)
InfoGain(InstanceList ilist)

Method Summary

Modifier and Type	Method and Description
double	getBaseEntropy()
LabelVector	getBaseLabelDistribution()

Methods inherited from class edu.umass.cs.mallet.base.types.RankedFeatureVector

getIndexAtRank, getMaxValue, getMaxValuedIndex, getMaxValuedIndexIn, getMaxValuedObject, getMaxValuedObjectIn, getMaxValueIn, getObjectAtRank, getRank, getRank, getValueAtRank, printByRank, printByRank, set, setRankOrder, setRankOrder, setRankOrder

Methods inherited from class edu.umass.cs.mallet.base.types.FeatureVector

cloneMatrix, cloneMatrixZeroed, contains, getAlphabet, getObjectIndices, location, toSimpFile, toString, toString, value

Methods inherited from class edu.umass.cs.mallet.base.types.SparseVector

absNorm, addTo, addTo, arrayCopyFrom, arrayCopyFrom, arrayCopyInto, dotProduct, dotProduct, dotProduct, dotProduct, extendedDotProduct, extendedDotProduct, getDimensions, getIndices, getNumDimensions, getValues, incrementValue, indexAtLocation, infinityNorm, isBinary, isNaN, location, makeBinary, makeNonBinary, map, numLocations, oneNorm, plusEqualsSparse, plusEqualsSparse, print, removeDuplicates, setAll, setValue, setValueAtLocation, singleIndex, singleSize, singleToIndices, singleValue, sortIndices, timesEquals, timesEqualsSparse, timesEqualsSparse, twoNorm, value, value, valueAtLocation, vectorAdd

Methods inherited from class java.lang.Object

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

Constructor Detail

InfoGain

public InfoGain(InstanceList ilist)

InfoGain

public InfoGain(Alphabet vocab,
                double[] infogains)

Method Detail

getBaseEntropy

public double getBaseEntropy()

getBaseLabelDistribution

public LabelVector getBaseLabelDistribution()