Abstract
Dominance relation is an important method in incomplete interval-valued information systems. In order to solve the problem that too many attributes maybe result in the ranking failure in the incomplete interval-valued information systems, the concepts of extended possibility degree, extended possibility degree dominance relation and average comprehensive dominance degree are defined. Based on them, a ranking method based on extended possibility degree dominance relation is proposed. Finally, comparing with other ranking methods, this new ranking method based on extended possibility degree dominance relation not only has stronger differentiation degree, but also can make ranking results more objective and reasonable.
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