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adddelay

Add delay to neural network response

Syntax

net = adddelay(net,n)

Description

net = adddelay(net,n) takes these arguments,

net

Neural network

n

Number of delays

and returns the network with input delay connections increased, and output feedback delays decreased, by the specified number of delays n. The result is a network which behaves identically, except that outputs are produced n timesteps later.

If the number of delays n is not specified, a default of one delay is used.

Examples

Here a time delay network is created, trained and simulated in its original form on an input time series X and target series T. It is then simulated with a delay removed and then added back. These first and third outputs will be identical, while the second will be shifted by one timestep.

[X,T] = simpleseries_dataset;
net = timedelaynet(1:2,20);
[Xs,Xi,Ai,Ts] = preparets(net,X,T);
net = train(net,Xs,Ts,Xi);
y1 = net(Xs)
net2 = removedelay(net);
[Xs,Xi,Ai,Ts] = preparets(net2,X,T);
y2 = net2(Xs,Xi)
net3 = adddelay(net2)
[Xs,Xi,Ai,Ts] = preparets(net3,X,T);
y3 = net3(Xs,Xi)

See Also

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