Package org.flag4j.operations.dense.real

Class RealDenseVectorOperations

java.lang.Object

org.flag4j.operations.dense.real.RealDenseVectorOperations

public final class RealDenseVectorOperations
extends Object

This class provides low level implementations for several vector operation.

Field Summary

Fields

Modifier and Type	Field	Description
private static final int	OUTER_CONCURRENT_THRESHOLD	Minimum number of entries to apply concurrent algorithm for outer product.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	RealDenseVectorOperations()

Method Summary

Modifier and Type	Method	Description
static Matrix	dispatchOuter(Vector src1, Vector src2)	Dispatches an outer product problem to an appropriate implementation based on the size of the vectors involved.
static double	innerProduct(double[] src1, double[] src2)	Computes the vector inner product for two real dense vectors.
static double[]	outerProduct(double[] src1, double[] src2)	Computes the vector outer product between two real dense vectors.
static double[]	outerProductConcurrent(double[] src1, double[] src2)	Computes the vector outer product between two real dense vectors.

Methods inherited from class java.lang.Object

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

Field Details

OUTER_CONCURRENT_THRESHOLD

private static final int OUTER_CONCURRENT_THRESHOLD

Minimum number of entries to apply concurrent algorithm for outer product.

See Also:

• Constant Field Values

Constructor Details

RealDenseVectorOperations

private RealDenseVectorOperations()

Method Details

innerProduct

public static double innerProduct(double[] src1,
 double[] src2)

Computes the vector inner product for two real dense vectors.

Parameters:

src1 - Entries of the first vector.

src2 - Entries of the second vector.

Returns:

The inner product of the two vectors.

outerProduct

public static double[] outerProduct(double[] src1,
 double[] src2)

Computes the vector outer product between two real dense vectors.

Parameters:

src1 - Entries of first vector.

src2 - Entries of second vector.

Returns:

The matrix resulting from the vector outer product.

outerProductConcurrent

public static double[] outerProductConcurrent(double[] src1,
 double[] src2)

Computes the vector outer product between two real dense vectors.

Parameters:

src1 - Entries of first vector.

src2 - Entries of second vector.

Returns:

The matrix resulting from the vector outer product.

dispatchOuter

public static Matrix dispatchOuter(Vector src1,
 Vector src2)

Dispatches an outer product problem to an appropriate implementation based on the size of the vectors involved.

Parameters:

src1 - First vector in outer product.

src2 - Second vector in outer product.

Returns:

The outer product of the two vectors src1 and src2.