Efficient Estimation of Multidimensional Regression Model using Multilayer Perceptrons

Details Efficient Estimation of Multidimensional Regression Model using Multilayer Perceptrons Efficient Estimation of Multidimensional Regression Model using Multilayer Perceptrons

2008-02-21

arxiv.org/abs/0802.3152v1

Neurocomputing / EEG Neurocomputing 69, 7-9 (2006) 671-678

Mathematics

Statistics Theory

Scientific paper

This work concerns the estimation of multidimensional nonlinear regression models using multilayer perceptrons (MLPs). The main problem with such models is that we need to know the covariance matrix of the noise to get an optimal estimator. However, we show in this paper that if we choose as the cost function the logarithm of the determinant of the empirical error covariance matrix, then we get an asymptotically optimal estimator. Moreover, under suitable assumptions, we show that this cost function leads to a very simple asymptotic law for testing the number of parameters of an identifiable MLP. Numerical experiments confirm the theoretical results.

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