关键词: 粗糙集, 三支决策, 自适应, 认知效率

Abstract:  An adaptive learning method of rough set approximation based on three-way decision-theory is discussed, and an algorithm for attribution evaluation function is also established. What’s more, in order to make the relationship clearer between objects and attributes through the process of rough set approximation, the concept of description set is introduced. Then a given target concept can be approximated under the known attribute evaluation function. Finally, the process between the new approximation method and cognition is compared, and their similarities are analyzed as well. With the benefit of the inspiration from the approximation process, the efficiency of cognition can be improved to some extent.

Key words: rough set, three-way decisions, adaptive, efficiency of cognition