The set-valued decision information system and its knowledge reduction. (Chinese. English summary) Zbl 1199.68372

Chen, Xiu; Li, Kedian

J. Hainan Norm. Univ., Nat. Sci. 21, No. 4, 389-392, 426 (2008).

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.)

Keywords:

the set-valued decision information system; a variable precision relationship; the knowledge reductions; the discernibility matrices