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The set-valued decision information system and its knowledge reduction. (Chinese. English summary) Zbl 1199.68372
Summary: A new relationship based on a variable precision parameter in the set-valued decision information system, namely, a variable precision relationship, is defined. By changing the value of the parameter; the objects can be classified more reasonably. The knowledge reduction in a set-valued decision information system and its attribute feature are discussed here and the discernibility matrices are also proposed.
MSC:
68T30 Knowledge representation
03E72 Theory of fuzzy sets, etc.
68U35 Computing methodologies for information systems (hypertext navigation, interfaces, decision support, etc.)
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