| Neural Network Toolbox | |
Linear transfer derivative function
Syntax
Description
dpurelin is the derivative function for logsig.
dpurelin(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 purelin neurons.
N = [0.1; 0.8; -0.7];
We calculate the layer's output A with purelin and then the derivative of A with respect to N.
A = purelin(N)
dA_dN = dpurelin(N,A)
Algorithm
The derivative of purelin is calculated as follows:
D(i,q) = 1
See Also
| | dposlin | dradbas | |