Abstract
Nowadays there are two kinds of tools which are widely used in uncertain information processing, namely, the fuzzy sets theory and fuzzy roughness sets theory. Besides, how to construct a fusion method for the two kinds of uncertain information systematically has been a focus in both academic and applied fields. In this paper, we put forward the concept of level effect function, and analyze the characteristics of a kind of level effect function. Furthermore, we present the fuzzy roughness degree measurement model based on level effect (FRD-BLE), by combining with the roughness measurement method of level cut set. All the results indicate that FRD-BLE has good structural characteristics and interpretability both in theoretical analysis and practical applications. It can be easily apply the fuzzy processing consciousness into decision-making system with the aid help of FRD-BLE.
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