edu.umass.cs.mallet.base.types

Class IndexedSparseVector

java.lang.Object

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

edu.umass.cs.mallet.base.types.IndexedSparseVector

All Implemented Interfaces:

ConstantMatrix, Vector, Serializable

public class IndexedSparseVector
extends SparseVector
implements Serializable

See Also:

Serialized Form

Field Summary

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

hasInfinite, indices, values

Constructor Summary

Constructors

Constructor and Description
IndexedSparseVector() Create an empty vector
IndexedSparseVector(int[] featureIndices) Create binary vector
IndexedSparseVector(int[] featureIndices, double[] values) Create non-binary vector, possibly dense if "featureIndices" or possibly sparse, if not
IndexedSparseVector(int[] indices, double[] values, int capacity, int size, boolean copy, boolean checkIndicesSorted, boolean removeDuplicates)

Method Summary

Modifier and Type	Method and Description
ConstantMatrix	cloneMatrix() CLONING
ConstantMatrix	cloneMatrixZeroed()
void	columnPlusEquals(int index, double value)
double	dotProduct(DenseVector v)
double	dotProduct(SparseVector v)
void	indexVector()
int	location(int index)
void	plusEqualsSparse(SparseVector v) For each index i that is present in this vector, set this[i] += v[i].
void	plusEqualsSparse(SparseVector v, double factor) For each index i that is present in this vector, set this[i] += factor * v[i].
void	setAll(double v) Sets every present index in the vector to v.
void	setValue(int index, double value) Sets the value at the given index.
void	setValueAtLocation(int location, double value) Sets the value at the given location.

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

IndexedSparseVector

public IndexedSparseVector(int[] indices,
                           double[] values,
                           int capacity,
                           int size,
                           boolean copy,
                           boolean checkIndicesSorted,
                           boolean removeDuplicates)

IndexedSparseVector

public IndexedSparseVector()

Create an empty vector

IndexedSparseVector

public IndexedSparseVector(int[] featureIndices,
                           double[] values)

Create non-binary vector, possibly dense if "featureIndices" or possibly sparse, if not

IndexedSparseVector

public IndexedSparseVector(int[] featureIndices)

Create binary vector

Method Detail

cloneMatrix

public ConstantMatrix cloneMatrix()

Description copied from class: SparseVector

CLONING

Specified by:

cloneMatrix in interface ConstantMatrix

Overrides:

cloneMatrix in class SparseVector

cloneMatrixZeroed

public ConstantMatrix cloneMatrixZeroed()

Overrides:

cloneMatrixZeroed in class SparseVector

indexVector

public void indexVector()

setValue

public final void setValue(int index,
                           double value)

Description copied from class: SparseVector

Sets the value at the given index.

Overrides:

setValue in class SparseVector

setValueAtLocation

public final void setValueAtLocation(int location,
                                     double value)

Description copied from class: SparseVector

Sets the value at the given location.

Overrides:

setValueAtLocation in class SparseVector

columnPlusEquals

public void columnPlusEquals(int index,
                             double value)

dotProduct

public final double dotProduct(DenseVector v)

Overrides:

dotProduct in class SparseVector

dotProduct

public final double dotProduct(SparseVector v)

Overrides:

dotProduct in class SparseVector

plusEqualsSparse

public final void plusEqualsSparse(SparseVector v,
                                   double factor)

Description copied from class: SparseVector

For each index i that is present in this vector, set this[i] += factor * v[i]. If v has indices that are not present in this, these are just ignored.

Overrides:

plusEqualsSparse in class SparseVector

plusEqualsSparse

public final void plusEqualsSparse(SparseVector v)

Description copied from class: SparseVector

For each index i that is present in this vector, set this[i] += v[i]. If v has indices that are not present in this, these are just ignored.

Overrides:

plusEqualsSparse in class SparseVector

setAll

public final void setAll(double v)

Description copied from class: SparseVector

Sets every present index in the vector to v.

Overrides:

setAll in class SparseVector

location

public int location(int index)

Specified by:

location in interface ConstantMatrix

Overrides:

location in class SparseVector