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Zbl 0951.68548
Kryszkiewicz, Marzena
Rough set approach to incomplete information systems. (English)
[J] Inf. Sci. 112, No.1-4, 39-49 (1998). ISSN 0020-0255

Summary: We present rough set approach to reasoning in incomplete information systems. We propose reduction of knowledge that eliminates only that information, which is not essential from the point of view of classification or decision making. In our approach we make only one assumption about unknown values: the real value of a missing attribute is one from the attribute domain. However, we do not assume which one. We show how to find decision rules directly from such an incomplete decision table, which are as little non-deterministic as possible and have minimal number of conditions.

MSC 2000:: *68T30 Knowledge representation
03E72 Fuzzy sets (logic)

Keywords: rough set; incomplete information systems

Cited in: Zbl 1069.68605

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