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Uncertain Knowledge Representation Based on Cloud Model

Liu Changyu 1,2 Li Deyi 3 Pan Lili 41 (College of Communication Engineering,PLA University of Science and Technology,Nanjing210016) 2 (State Key Laboratory of Software Engineering,Wuhan University,Wuhan430072) 3 (Institute of Electronic System Engineering,Beijing100039) 4 (School of Software,Tsinghua University,Beijing100084)  
Cloud model is an effective tool in uncertain transforming between qualitative concepts and their quantitative expressions.In this paper,some mathematic properties of cloud models are proved firstly.Then we analyze the background and value of cloud models in representing uncertain knowledge.Finally an example is given.
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