To Using Predicate/Transition Nets as Instrument of Inference in Expert Systems

Abstract

PrT-Nets are usefull as an instrument of inference. The article will give a short introduction in the PrT-Net theory and shows on same example how to transfer the work process in a PrT-Net structure. 2 Introduction Processes are changes of state in systems. For planning and controlling by using of expertsystems they have to he represented in it with their structures, their relations and their behaviour. The logical relation of the real system concerning all relevant exogenous, and mostly stochastical conditions have to be found in the model. An expert, system needs an inference instrument connecting user, real system and data base management system. This inference instrument has to settle following conditions: • to represents the real structures and relations • to represent the behaviour of the real system