ISSUES IN NONLINEAR STOCHASTIC GREY BOX IDENTIFICATION

Grey box identification refers to the practice of identifying dynamical systems in model structures exploiting partial prior information. This, contribution reviews a method for stochastic grey box identification and surveys experiences and lessons of applying it to a number of industrial processes. Issues to be addressed include advantages and costs of introducing stochastics into the model, the question of what contribution must be expected from the model designer as opposed to what can be formalized in computer algorithms, and an outlook on future plans to resolve present shortcomings.