“…Considering the cold rolling process, the requirements to enhance the quality of the products are typically thickness and shape. The extensive literature shows several strategies to reach these objectives, inclusive through non-conventional techniques as neural networks (Larkiola et al, 1996;Larkiola et al, 1998;Yang et al, 2004a), fuzzy logic (Jung et al, 1995;Zhu et al, 2003) and genetic programming (Son et al, 2004). The only condition for the new strategies is to represent correctly the behavior of the process in a quantitative and qualitative form, for different operation points, so that these can be used in the design of on-line control and supervision systems.…”