Documentation

This is machine translation

Translated by Microsoft
Mouseover text to see original. Click the button below to return to the English verison of the page.

Note: This page has been translated by MathWorks. Please click here
To view all translated materals including this page, select Japan from the country navigator on the bottom of this page.

scalprod

Scalar product weight function

Syntax

Z = scalprod(W,P)
dim = scalprod('size',S,R,FP)
dw = scalprod('dw',W,P,Z,FP)

Description

scalprod is the scalar product weight function. Weight functions apply weights to an input to get weighted inputs.

Z = scalprod(W,P) takes these inputs,

W

1-by-1 weight matrix

P

R-by-Q matrix of Q input (column) vectors

and returns the R-by-Q scalar product of W and P defined by Z = w*P.

dim = scalprod('size',S,R,FP) takes the layer dimension S, input dimension R, and function parameters, and returns the weight size [1-by-1].

dw = scalprod('dw',W,P,Z,FP) returns the derivative of Z with respect to W.

Examples

Here you define a random weight matrix W and input vector P and calculate the corresponding weighted input Z.

W = rand(1,1);
P = rand(3,1);
Z = scalprod(W,P)

Network Use

To change a network so an input weight uses scalprod, set net.inputWeights{i,j}.weightFcn to 'scalprod'.

For a layer weight, set net.layerWeights{i,j}.weightFcn to 'scalprod'.

In either case, call sim to simulate the network with scalprod.

See help newp and help newlin for simulation examples.

See Also

| | | |

Introduced in R2006a

Was this topic helpful?