基于原背景的补背景概念获取

计算机科学 ›› 2012, Vol. 39 ›› Issue (11): 197-200.

基于原背景的补背景概念获取

何苗,魏玲

(西北大学数学系西安710127)

出版日期:2018-11-16 发布日期:2018-11-16

Concept Acquisition of Complement Formal Context Based on the Original Context

Online:2018-11-16 Published:2018-11-16

摘要/Abstract

摘要： 形式概念分析是知识获取的一种有效工具，已被广泛应用到各个领域。从原背景概念的外延(内涵)出发，首先利用定义的“+”算子得到其补背景的部分概念，可证明这些概念包含了补背景的所有交不可约元(并不可约元); 其次给出从这些概念得到补背景的所有交不可约元(并不可约元)的判断方法，进而得到补背景的所有交不可约元(并不可约元);最后利用交不可约元(并不可约元)的性质进一步得到补背景的全部概念。

关键词: 形式背景，补背景，概念格，不可约元

Abstract: As an efficient tool for knowledge acctuisition,formal concept analysis has been applied to many fields. Based on the extents (intents) of a formal context,some concepts of complement context were obtained by the operator‘+’， and it was proved that these concepts includes all the meet irreducible elements (join-irreducible elements) of this com- plement context. Then, the approach to find all the meet irreducible elements (join-irreducible elements) was given. Fi- nally, all the concepts of complement context were obtained.

Key words: Formal contcxt,Complcmcnt contcxt,Conccpt latticc,Irrcduciblc clcmcnt

何苗,魏玲. 基于原背景的补背景概念获取[J]. 计算机科学, 2012, 39(11): 197-200. https://doi.org/

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