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Back-propagation learning and nonidealities in analog neural network hardware

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3 Author(s)
Frye, R.C. ; AT&T Bell Lab., Murray Hill, NJ, USA ; Rietman, E.A. ; Wong, C.C.

Experimental results from adaptive learning using an optically controlled neural network are presented. The authors have used example problems in nonlinear system identification and signal prediction, two areas of potential neural network application, to study the capabilities of analog neural hardware. These experiments investigated the effects of a variety of nonidealities typical of analog hardware systems. They show that network using large arrays of nonuniform components can perform analog communications with a much higher degree of accuracy than might be expected given the degree of variation in the network's elements. The effects of other common nonidealities, such as noise, weight quantization, and dynamic range limitations, were also investigated

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Neural Networks, IEEE Transactions on  (Volume:2 ,  Issue: 1 )