关键词: 形式概念分析, 对象概念, 属性概念, 关联规则

Abstract: In order to further facilitate data representation and improve the efficiency of data mining, two kinds of special concepts, namely object concept and attribute concept are studied. This paper analyzes relationship between object concepts（or attribute concepts） and irreducible elements, and recognition algorithms of object concepts and attribute concepts are put forward. A recursive algorithm for intent reduction which has attribute concepts as termination condition is given. Attributes sequence as well as its application in association rule extraction is studied.

Key words: formal concept analysis, object concept, attribute concept, association rule