Under the circumstance of inheriting the advantages of fuzzy cognitive map, considering that cognitive map (CM) and fuzzy cognitive map (FCM) fails to represent the diversity of the relations of concepts, the dynamic dependency between the relation measures and the state value of concepts, and the measures of uncertain causal relationships, thought of rough set is introduced to solve those problems, and rough cognitive map (RCM) is presented. RCM abstracts a comprehensive relationship between two concepts and gives a comprehensive weight to complete causal reasoning. So the simulating capability of FCM is extended. Finally, RCM is more flexible and robust than FCM; it can simulate the real world better.
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