关键词: 粗糙集理论, 信息熵, 层次分析法（AHP）, 属性权重

Abstract: This paper introduces rough set theory to the AHP (analytic hierarchy process) method, and proposes a novel method of constructing AHP judgment matrix based on rough sets and information entropy. In view that the  attribute weights generated from the AHP have a certain degree of subjectivity and preference by using the expert's judgment matrices, this paper utilizes the rough set theory and information entropy method to construct an integrated objective attribute weight with data driven viewpoint to adjust the subjective judgment matrix of existing AHP method, and further proposes a novel AHP acquirement weights method by considering the subjectivity and objectivity simultaneously. Finally, this paper uses the practical food and beverage data from “Dianping.com” to verify the effectiveness and feasibility of the proposed method.

Key words: rough set theory, information entropy, analytic hierarchy process (AHP), attribute weight