edu.ucla.sspace.vector

Class ScaledSparseDoubleVector

java.lang.Object

edu.ucla.sspace.vector.ScaledDoubleVector

edu.ucla.sspace.vector.ScaledSparseDoubleVector

All Implemented Interfaces:

DoubleVector, SparseDoubleVector, SparseVector<Double>, Vector<Double>

public class ScaledSparseDoubleVector
extends ScaledDoubleVector
implements SparseDoubleVector

A decorator for SparseDoubleVectors that scales every value in a given DoubleVector by some non zero scale.

Note that this automatically computes the scaling of a ScaledDoubleVector so that backing vector is scaled only once, thus preventing any recursive calls to scaling.

Author:

Keith Stevens

Constructor Summary

Constructors

Constructor and Description
ScaledSparseDoubleVector(SparseDoubleVector vector, double scale) Creates a new ScaledSparseDoubleVector that decorates a given SparseDoubleVector by scaling each value in vector by scale.

Method Summary

Methods

Modifier and Type	Method and Description
int[]	getNonZeroIndices() Returns all the indices whose values are non-zero

Methods inherited from class edu.ucla.sspace.vector.ScaledDoubleVector

add, get, getBackingVector, getScalar, getValue, length, magnitude, set, set, toArray

Methods inherited from class java.lang.Object

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

Methods inherited from interface edu.ucla.sspace.vector.DoubleVector

add, get, getValue, set, toArray

Methods inherited from interface edu.ucla.sspace.vector.Vector

equals, hashCode, length, magnitude, set

Constructor Detail

ScaledSparseDoubleVector

public ScaledSparseDoubleVector(SparseDoubleVector vector,
                        double scale)

Creates a new ScaledSparseDoubleVector that decorates a given SparseDoubleVector by scaling each value in vector by scale.

Method Detail

getNonZeroIndices

public int[] getNonZeroIndices()

Returns all the indices whose values are non-zero

Specified by:

getNonZeroIndices in interface SparseVector<Double>