RULES EXTRACTION OF FORMAL DECISION CONTEXTS BASED ON FOUR-WAY CONCEPT LATTICES
SHUJING LI
Department of Mathematics and Statistics, Qinghai Nationalities University Xining 810007 P. R. China.
LI FU
Department of Mathematics and Statistics, Qinghai Nationalities University Xining 810007 P. R. China.
*Author to whom correspondence should be addressed.
Abstract
This paper mainly discusses the rule extraction of formal decision contexts based on four-way concept lattice. Firstly, we dene the four-way concept lattice over the formal decision context, and illustrate it using the example. Secondly, we discuss the rules extraction under the given formal decision context, and give out decision rules and denition of redundant rule. Lastly, we study the relationship between classical concept lattice, three-way concept lattice and four-way concept
lattice.
Keywords: Formal decision context, four-way concept lattice, rules acquisition, consistent set.
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References
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