Reliability of operating window identified from process data
Heimo Ihalainena, Risto Ritalaa and Olli Saarelab, aTampere University of Technology, Department of Automation Science and Technology, P.O.Box 692, FIN-33101 Tampere, Finland, bVTT Technical Research Centre of Finland, P.O.Box 1000, FIN-02044 VTT, Finland
This paper discusses data-based operating windows as a tool for process management and development. In particular identification of the operating window and its uncertainty are analyzed. The operating window is determined by maximizing either the mutual information (static) or entropy transfer (dynamic). An industrial example shows that the entropy of the indicator variable is reduced to half by an operating window specified ...