INT301 Lab 11-Elman networks and time series modelling Solved

Elman networks and time series modelling

In Matlab an Elman network can be created using function newelm as follows (type “help newelm” in command window for help in detail):

            newelm(input,target,[N1,...,N(K-1)])

where input and output represent the input and target of training set, [N1, …, N(K-1)] denote the number of units of each hidden layer (as the number of units of output layer is determined by target).

The demo code models the seriesx 0.75×2 0.2x (x x 1) using Elman n n1 n2 1 2

network, with one hidden layer of 15 units (K = 15) and 300 epochs in training. Understand the demo code and try different number of training/testing data size, different number of hidden layers and units of each layer, and different number of epochs.