Affiliations: Institute of Computing Technology, Chinese Academy of
Sciences, Beijing 100080, P. R. China and Graduate School of Chinese Academy of
Sciences, Beijing 100039, P. R. China. E-mail: jiangkong@163.net | Institute of Computing Technology, Chinese Academy of
Sciences Beijing 100080, P. R. China
Abstract: Since its foundation in the early 1980's, Formal
ConceptAnalysis (FCA) has been used in many applications in data analysis,
information retrieval, and knowledge discovery. In this paper, we suggest to
exploit the framework of relational database model (RDM) and rough relational
database model (RRDM) for Formal Concept Analysis. The basic idea is as
follows. We firstly treat any relation (R,A) of RDM as a many-valued context of
FCA. But for the rough relations of RRDM, we define a special kind of
many-valued context – rough-relational context in FCA (In this kind
of context, every attribute value is a subset, but not an element, of the
corresponding attribute domain), and treat any rough relation (R,A) of RRDMas a
rough-relational context of FCA. Correspondingly, the definitions for concepts
or rough concepts in context or rough-relational context (R,A) are given. The
basic properties about these concepts or rough concepts in (R,A) are also
discussed.
