AN EFFICIENT CONSTRAINED LEARNING ALGORITHM WITH MOMENTUM ACCELERATION

An algorithm for efficient learning in feedforward networks is presented. Momentum acceleration is achieved by solving a constrained optimization problem using nonlinear programming techniques. In particular, minimization of the usual mean square error cost function is attempted under an additional condition for which the purpose is to optimize the alignment of the weight update vectors in successive epochs. The algorithm is applied to several benchmark training tasks (exclusive-or, encoder, multiplexer, and counter problems). Its performance, in terms of learning speed and scalability properties, is evaluated and found superior to the performance of reputedly fast variants of the back-propagation algorithm in the above benchmarks.