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Initial state training procedure improves dynamic recurrent networks with time-dependent weights

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4 Author(s)
Leistritz, L. ; Inst. of Med. Stat., Friedrich-Schiller-Univ., Jena, Germany ; Galicki, M. ; Witte, H. ; Kochs, E.

The problem of learning multiple continuous trajectories by means of recurrent neural networks with (in general) time-varying weights is addressed. The learning process is transformed into an optimal control framework where both the weights and the initial network state to be found are treated as controls. For such a task, a learning algorithm is proposed which is based on a variational formulation of Pontryagin's maximum principle. The convergence of this algorithm, under reasonable assumptions, is also investigated. Numerical examples of learning nontrivial two-class problems are presented which demonstrate the efficiency of the approach proposed

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Neural Networks, IEEE Transactions on  (Volume:12 ,  Issue: 6 )