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Simple sigmoid-like activation function suitable for digital hardware implementation

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1 Author(s)
Kwan, H.K. ; Dept. of Electr. Eng., Windsor Univ., Ont., Canada

A simple sigmoid-like second-order piecewise activation function suitable for direct digital hardware implementation is presented. Simulation results on the uses of the second-order function and the bipolar sigmoid function for training multilayer feedforward networks using the backpropagation algorithm show that they have similar generalisation properties while the second-order function has a slight advantage in convergence speed.

Published in:

Electronics Letters  (Volume:28 ,  Issue: 15 )