Returns the value of the derivative of the activation function.

Namespace: Imsl.DataMining.Neural
Assembly: ImslCS (in ImslCS.dll) Version: 6.5.0.0

Syntax

C#
double Derivative(
	double x,
	double y
)
Visual Basic (Declaration)
Function Derivative ( _
	x As Double, _
	y As Double _
) As Double
Visual C++
double Derivative(
	double x, 
	double y
)

Parameters

x
Type: System..::.Double
A double which specifies the point at which the activation function is to be evaluated.
y
Type: System..::.Double
A double which specifies y = g(x), the value of the activation function at x.

Return Value

A double containing the value of the derivative of the activation function at x.

Remarks

y is not mathematically required, but can sometimes be used to more quickly compute the derivative.

See Also