Robust LTS backpropagation learning algorithm

Authors:
Andrzej Rusiecki
Affiliations:
Institute of Computer Engineering, Control and Robotics, Wroclaw, Poland
Venue:
IWANN'07 Proceedings of the 9th international work conference on Artificial neural networks
Year:
2007

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Abstract

Training data sets containing outliers are often a problem for supervised neural networks learning algorithms. They may not always come up with acceptable performance and build very inaccurate models. In this paper new, robust to outliers, learning algorithm based on the Least Trimmed Squares (LTS) estimator is proposed. The LTS learning algorithm is simultaneously the first robust learning algorithm that takes into account not only gross errors but also leverage data points. Results of simulations of networks trained with the new algorithm are presented and the robustness against outliers is demonstrated.