中文摘要：

研究集对系统的特性与粗集理论中等价关系之间的联系与转化方式，构建了粗糙联系度函数，探讨了粗糙联系度函数的基本性质与动态特征，形成了面向不完备信息处理领域的粗糙集对分析方法。将粗糙集对分析方法应用到不合有决策属性的信息系统中，分析不同属性集合的分类结果，构建基于概念划分的分类贴近度，进而给出一种新的属性约简方法，最终通过一个实例验证了该方法的合理性与可行性。

英文摘要：

The connection and transformation between system features of set pair and equivalence relation of rough set theory were discussed in this paper, and the Rough connection degree function was constructed. Then it is considered that the basic features and dynamic characters of rough connection degree function and a new rough set pair analysis method is formed for the incomplete information field. Rough set pair analysis method was applied into the information system without decision attribute and the classification between the classification Key words ： results of two condition attribute sets are compared. Then classification closeness degree two attribute sets is constructed. Finally, a new method of attribute reduction based on closeness degree is given and its rationality and feasibility were proved through a case study.