Synthesis of Concepts Based on Rough Set Theory.

Rough set theory usually deals with how a concept is represented with some granules. In this paper we extend rough set theory, and use it to deal with how a series of concepts are represented with a granule. We use it to seek the most possible determined reasons and the most possible reasons from decision systems, and also to reduce decision tables. This may be a new aspect of rough set research, and may extend application fields of rough set theory. [ABSTRACT FROM AUTHOR]