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Knowledge acquisition is an important research area of knowledge discovery database and machine leaning, which includs knowledge reduction and knowledge extraction from large number of original data. Researchers in these fields are very interested in this new research topic since it offers opportunities to discover useful knowledge in information systems.Many algorithms demand information system must...
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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