Limiting the effects of weight errors in feedforward networks using interval arithmetic

We address in this work the problem of weight inaccuracies in digital and analog feedforward networks. Both kind of implementations suffer from this problem due to physical limits of the particular technology. This work presents a novel and effective approach through the application of interval arithmetic to the multilayer perceptron. Results show that our method allows one to (1) compute strict bounds of the output error of the network, (2) find robust solutions respect to weight inaccuracies and (3) compute the minimum weight precision required to obtain the desired performance of the network