关键词: 区间值信息系统, 形式背景, 概念格, 可辨识属性矩阵, 属性约简, 约简集

Abstract: Interval value information system is a special information system that the attribute value is in the form of interval value. In this paper, the definitions of 0-1 form background and the corresponding concept lattice are described. Then the decision theorem of coordinate set and the equal proposition of reduction set are given. It introduces the discernibility attribute matrix, researches on theoretical method of interval value information system based on concept lattice attribute reduction.

Key words: interval value information system, formal context, concept lattice , discernibility matrix, attribute reduction, reduction set