Neural Network Toolbox

dradbas

Derivative of radial basis transfer function

Syntax

dA_dN = dradbas(N,A)

Description

dradbas is the derivative function for radbas.

dradbas(N,A) takes two arguments,

• N -- S x Q net input

  A -- S x Q output

and returns the S x Q derivative dA/dN.

Examples

Here we define the net input N for a layer of 3 radbas neurons.

• N = [0.1; 0.8; -0.7];
  

We calculate the layer's output A with radbas and then the derivative of A with respect to N.

• A = radbas(N)
  

Algorithm

The derivative of radbas is calculated as follows:

• d = -2*n*a
  

See Also

radbas

dpurelin

dsatlin

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