Backpropagation learning: bp_innerloop The backpropagation learning algorithm, used in each of the demos below. XOR Demo: bpxor.m Learning the XOR function. XorPats.m Input patterns for XOR. XorAns.m Desired output patterns. PlotBpPats.m Plot of input patterns PlotBpBoundary.m Plot decision boundary during learning. Encoder Demo: encoder.m N-2-N encoder. PlotEncoder.m Plot of encoder decision boudaries. Function Approxmation Demo: approx.m 1-N-1 function approximator network. approxhelper.m Inner loop of training algorithm. approxfn.m Function to be approximated. PlotApprox.m Plot hidden unit and approximator results.