These can include, for example, the addition of feedback loops from output to input, in doing so creating models analogous to closed-loop control theory.

An artificial neural network models biological synapses and neurons and can be used to make predictions for complex data sets. Neural networks and their associated algorithms are among the most ...

I. W. Sandberg, A Nonlinear Input-Output Model of a Multisectored Economy, Econometrica, Vol. 41, No. 6 (Nov., 1973), pp. 1167-1182 ...