NMathFunctionsDot(DoubleSparseVector, DoubleVector) Method

Calculates the dot product of a sparse vector and a dense vector.

Namespace: CenterSpace.NMath.Core
Assembly: NMath (in NMath.dll) Version: 7.4

Syntax

public static double Dot(
	DoubleSparseVector w,
	DoubleVector v
)

Public Shared Function Dot ( 
	w As DoubleSparseVector,
	v As DoubleVector
) As Double

public:
static double Dot(
	DoubleSparseVector^ w, 
	DoubleVector^ v
)

static member Dot : 
        w : DoubleSparseVector * 
        v : DoubleVector -> float

w DoubleSparseVector: A sparse vector.
v DoubleVector: A dense vector. The length of this vector must accomodate the largest index of the largest nonzero value in the sparse vector. Specifically v.Length must be greater than max{indices of nonzero value in w} + 1.

Double
The dot product.

Exceptions

Exception	Condition
InvalidArgumentException	Thrown if v or w has zero length, or the length of v is less than the maximum nonzero index in w + 1.

Remarks

d = v[0]w[0] + v[1]w[1]...