关键词：粗糙集；属性约简；粒关系矩阵；指标权重；综合评判
Abstract：In view of the shortcomings of the index weight determination method in the classroom teaching quality evaluation system, firstly, a decision-making and evaluation information grain matrix is established; Calculating the granular matrix of the condition attribute and the decision attribute to obtain a granular relation inclusion degree matrix, and carrying out reduction according to the attribute reduction algorithm of the granular relation inclusion degree matrix to determine the weight vector of evaluation indexes in the classroom teaching quality evaluation system based on the granular relation matrix; Secondly, a fuzzy evaluation matrix is established by membership function. Finally, the weight vector of each index and the fuzzy evaluation matrix are combined to calculate the comprehensive evaluation result of the teacher's classroom teaching quality. The example analysis shows the feasibility and effectiveness of the method. The untrue proportion of the questionnaire survey is calculated through the mathematical model, which makes the evaluation more accurate.
Key words：rough set；granular relation matrix；index weight；comprehensive judgment
