Generalization and Parameter Estimation in Feedforward Nets: Some Experiments

Part of Advances in Neural Information Processing Systems 2 (NIPS 1989)

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N. Morgan, H. Bourlard


We have done an empirical study of the relation of the number of parameters (weights) in a feedforward net to generalization perfor(cid:173) mance. Two experiments are reported. In one, we use simulated data sets with well-controlled parameters, such as the signal-to-noise ratio of continuous-valued data. In the second, we train the network on vector-quantized mel cepstra from real speech samples. In each case, we use back-propagation to train the feedforward net to discriminate in a multiple class pattern classification problem. We report the results of these studies, and show the application of cross-validation techniques to prevent overfitting.