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Improvement of the neighborhood based Levenberg-Marquardt algorithm by local adaptation of the learning coefficient

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4 Author(s)
A. Toledo ; Dept. Tecnologia Electron., Univ. Politecnica de Cartagena, Spain ; M. Pinzolas ; J. J. Ibarrola ; G. Lera

In this letter, an improvement of the recently developed neighborhood-based Levenberg-Marquardt (NBLM) algorithm is proposed and tested for neural network (NN) training. The algorithm is modified by allowing local adaptation of a different learning coefficient for each neighborhood. This simple add-in to the NBLM training method significantly increases the efficiency of the training episodes carried out with small neighborhood sizes, thus, allowing important savings in memory occupation and computational time while obtaining better performance than the original Levenberg-Marquardt (LM) and NBLM methods.

Published in:

IEEE Transactions on Neural Networks  (Volume:16 ,  Issue: 4 )