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在序决策信息系统中,定义区间为支配一个特定的对象同时又被另一个特定的对象所支配的所有对象的集合.以区间为基本知识颗粒,建立新的优势关系粗糙集模型,并由此获取决策值为特定区间范围的区间决策规则.提出区间的约简的概念,构造区分函数计算区间的约简,并由此计算优化区间决策规则.该方法比初始的优势关系粗糙集方法适应性更强,且所得区间决策规则可直接应用于序信息系统的分类问题.
In ordinal decision-making information system, the interval is defined as a set of all the objects which dominate a specific object and at the same time is dominated by another specific object.With the interval as the basic knowledge particle, a new dominant relational rough set model is established and Obtaining the decision rule of the interval whose decision value is a certain range, this paper proposes the concept of interval reduction, and constructs the reduction of the interval of the partition function, and then calculates the decision rule of the optimization interval.It is more adaptive than the initial dominant Rough Set method Stronger, and the rules of the derived interval can be directly applied to the classification of information system.