The properties of two-direction S-rough fuzzy sets

Authors:
Jiqin Liu
Affiliations:
Department of Statistics and Mathematics, Shandong Finance Institute, Jinan, P.R.China
Venue:
FSKD'09 Proceedings of the 6th international conference on Fuzzy systems and knowledge discovery - Volume 6
Year:
2009

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Abstract

In the paper we generalize static rough fuzzy sets to dynamic rough fuzzy sets. Using the concepts of fuzzy elementary transfers, we put forward two-direction S-rough fuzzy sets which has dynamic characteristics. Then we define the cut sets of the two-direction S-rough fuzzy sets, and discuss their properties. We analyze the relationships between cut sets of the two-direction S-rough fuzzy sets and other rough sets. Finally we give its application in the risk investment system.