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 |
|
P |
|
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
.
Version History
Introduced in R2006a