Package org.hipparchus.linear

Class SparseRealVector

java.lang.Object

org.hipparchus.linear.RealVector

org.hipparchus.linear.SparseRealVector

Direct Known Subclasses:

OpenMapRealVector

public abstract class SparseRealVector
extends RealVector

Marker class for RealVectors that require sparse backing storage

Caveat: Implementation are allowed to assume that, for any x, the equality x * 0d == 0d holds. But it is is not true for NaN. Moreover, zero entries will lose their sign. Some operations (that involve NaN and/or infinities) may thus give incorrect results, like multiplications, divisions or functions mapping.

Nested Class Summary

Nested classes/interfaces inherited from class org.hipparchus.linear.RealVector

RealVector.Entry, RealVector.SparseEntryIterator

Constructor Summary

Constructors

Constructor	Description
SparseRealVector()	Empty constructor.

Method Summary

Methods inherited from class org.hipparchus.linear.RealVector

add, addToEntry, append, append, checkIndex, checkIndices, checkVectorDimensions, checkVectorDimensions, combine, combineToSelf, copy, cosine, dotProduct, ebeDivide, ebeMultiply, equals, getDimension, getDistance, getEntry, getL1Distance, getL1Norm, getLInfDistance, getLInfNorm, getMaxIndex, getMaxValue, getMinIndex, getMinValue, getNorm, getSubVector, hashCode, isInfinite, isNaN, iterator, map, mapAdd, mapAddToSelf, mapDivide, mapDivideToSelf, mapMultiply, mapMultiplyToSelf, mapSubtract, mapSubtractToSelf, mapToSelf, outerProduct, projection, set, setEntry, setSubVector, sparseIterator, subtract, toArray, unitize, unitVector, unmodifiableRealVector, walkInDefaultOrder, walkInDefaultOrder, walkInDefaultOrder, walkInDefaultOrder, walkInOptimizedOrder, walkInOptimizedOrder, walkInOptimizedOrder, walkInOptimizedOrder

Methods inherited from class java.lang.Object

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

Constructor Details

SparseRealVector

public SparseRealVector()

Empty constructor.

This constructor is not strictly necessary, but it prevents spurious javadoc warnings with JDK 18 and later.

Since:

3.0