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Attribute reduction is an important problem in an information system. The paper proposed a novel method to reduce the redudant attributes in an incomplete information system based on rough set theory. The method introduce the concepts such as upper-approximate relationship and lower-approximate relationship, equivalence relationship, tolerance relationship, attribute significance and so on, to calculate...
To reduce attributes in incomplete information system, this paper proposed a direct method based on rough set theory, which gives the concept of tolerance relationship similar matrix via using an extension of equivalence relationship of rough set theory. It solves the problem of inconsistency in the incomplete information system through the introduction of restrictions of the generalized decision...
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