" Unsupervised learning algorithms offer less computational complexity and less accuracy than supervised learning algorithms. Then former learn rapidly, often on a single pass of noisy data." -------------------------------------------------------------------------------------------------- The solution of the minimum path problem with two recurent neural networks is given in (Wang 1998) Wang, J. (1998). Primal and Dual Neural Networks for Shortest-Path Planning. IEEE Trans. on Systems,Man and Cybernetics-Part A: Systems and Humans, Vol. 28, No. 6, pp. 864-869, ISSN 1083-441 => done