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Bootstrapping Neural Networks

Department of Mathematics, University of Kaiserslautern, 67653 Kaiserslautern, Germany

Michael H. Neumann

Department of Economics, Humboldt University of Berlin, 13591 Berlin, Germany

Knowledge about the distribution of a statistical estimator is important for various purposes, such as the construction of confidence intervals for model parameters or the determination of critical values of tests. A widely used method to estimate this distribution is the so-called bootstrap, which is based on an imitation of the probabilistic structure of the data-generating process on the basis of the information provided by a given set of random observations. In this article we investigate this classical method in the context of artificial neural networks used for estimating a mapping from input to output space. We establish consistency results for bootstrap estimates of the distribution of parameter estimates.

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