The Sorting Methods Based on Dominance of Hierarchical Rough Sets

This article is aiming at the case that attribute sets are defined as a partial order sets in the information system. Using hierarchical rough sets theory, we established the dominance system of knowledge, and sorted out the object of study. In this article, the main characteristic is combining the hierarchical rough sets with partial order sets for the purpose of information fusion, putting forward a sorting method in multiple attribute decision making. This paper fully shows the flexibility of hierarchical rough sets, and the feasibility of the combining hierarchical rough sets with dominance system of knowledge. We also did an experiment on sorting method, and satisfactory results have been achieved.