Journal
INTERNATIONAL JOURNAL OF GENERAL SYSTEMS
Volume 36, Issue 2, Pages 147-156Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/03081070600913650
Keywords
formal concept analysis; concept lattice; rough set theory; decision context; decision implication
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In this paper, the notions of decision table and decision rule in Rough Set Theory are introduced naturally into Formal Concept Analysis as decision context and decision implication. Since extracting decision implications directly from decision context takes time, we present an inference rule called a-decision inference rule to eliminate the superfluous decision implications. Moreover, based on the inference rule we introduce the notion of a-maximal decision implication and prove that the set of all a-maximal decision implications is complete (cl-complete) and non-redundant (a-non-redundant). Finally, we present a method to generate the set.
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