关键词: 优势值关系, 集值决策系统, 变精度粗糙集模型

Abstract:

The variable precision idea is introduced in the dominance relation value of set-valued decision system,building
a variable precision rough set model of set-valued decision system based on dominance relation value,and
discussing the nature of the model as well as the impact of changes on the threshold β model. The new model can
not only deal with the uncertainty of the existence of partial order relationship or incomplete information system,
but also has a certain degree of fault tolerance. On the other hand,by setting the appropriate parameters β ,the
classification results of the new model become more consistent with the actual situation as well as human's intuitive
feeling during data processing. Case analysis further verifies the correctness of related conclusion.

Key words: dominance relation value, set-valued decision system, variable precision rough set model