The models of dominance---based multigranulation rough sets

Authors:
Xibei Yang
Affiliations:
Jiangsu Sunboon Information Technology Co., Ltd., Wuxi, Jiangsu, P.R. China
Venue:
ICIC'11 Proceedings of the 7th international conference on Intelligent Computing: bio-inspired computing and applications
Year:
2011

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Abstract

In this paper, the dominance---based rough set approach is introduced into multigranulation environment. Two different dominance---based multigranulation rough sets models: dominance---based optimistic multigranulation rough set and dominance---based pessimistic multigranulation rough set are constructed, respectively. Not only the properties of these two dominance---based multigranulation rough sets are discussed, but also the relationships among dominance---based optimistic multigranulation rough set, dominance---based pessimistic multigranulation rough set and the classical dominance---based rough set are investigated.