Some methods of fuzzy conditional inference and fuzzy reasoning

Zadeh and mamdani proposed fuzzy conditional inference. This fuzzy conditional inference applicable when prior information of consequent part is known. The TSK fuzzy conditional inference need not know the prior information but it is dificult to compute consequent part of fuzzy conditions. There are some applications like fuzzy medical diagnosis and fuzzy control systems, the prior information of consequent part may not be known. In this paper, fuzzy conditional inferences are proposed which are different from Zadeh, Mamdani and TSK fuzzy conditional inferences for “if … then …” fuzzy propositions when prior information is not available to consequent part. The fuzzy conditional inferences are also proposed for “if… then … else …” when prior information is not available to consequent part. The fuzzy reasoning is given for proposed fuzzy methods. The fuzzy medical diagnosis is given for these methods.