Study on Method of Determining Fuzzy Tokens in Fuzzy Petri Nets Based on Cloud Model
Dang Xiao-cha · Journal of Chinese Computer Systems · 2014
The fuzzy tokens are always assigned subjectively or given directly from experience by experts in current application of fuzzy Petri nets,which may result in the incorrect conclusions to the reasoning result of the fuzzy Petri nets. An effective method based on cloud model is proposed for determining fuzzy tokens. Backward cloud generator is employed to transform the expert or experimental knowledge into cloud concepts. And forward cloud generator is used to compute the degree of certainty that the evaluated object to the cloud concept. Thus the initial token of the fuzzy Petri nets is determined. The presented example confirms the feasibility and validity of cloud model in computing fuzzy tokens.