基于集值信息系统的扩充粗糙集模型

Extended Rough Set Model Based on Set-valued Information System

摘要

摘要:借助于属性集值的相似程度在集值信息系统上定义了一种新的带有参数的优势关系-α-优势关系,并研究了其性质;同时比较了两类优势关系,得到的结论是:只要合理地设置阈值α就可以提高分类的精度,从而提高对数据预测、分类的准确度.

Abstract:A new dominance relation with parameters dominance relation is defined by means of similarity degree of attributes set-value on the set-valued information systems, and its properties are investigated; Two kinds of dominance relations are compared, the precision of classification can improve as long as a reasonable threshold value is set, thereby improve the data prediction, accuracy of classification.