关键词: 合成随机信息系统, 属性约简, 协调集, 近似算子, 包含度

Abstract: This paper discusses the attribute reduction problem in combined random information systems based on the random information systems, and analyzes the relationship between the combined and the original information systems, as well as the relationship between the lower and upper approximation operators, then finds the consistent set on the combined random information systems can be constructed through two consistent sets of the original information systems. On the other hand, from the point of the inclusion degree it considers the reduction problem on the combined information systems, to verify whether the equivalent relationship exists between the inclusion degrees. Finally, the conclusions are verified through the instance.

Key words: combined random information systems, attribute reduction, consistent set, approximation operators, inclusion degree