Irreducible descriptive sets of attributes for information systems

Mikhail Moshkov, Andrzej Skowron, Zbigniew Suraj

Research output: Chapter in Book/Report/Conference proceedingChapter

3 Scopus citations

Abstract

The maximal consistent extension Ext(S) of a given information system S consists of all objects corresponding to attribute values from S which are consistent with all true and realizable rules extracted from the original information system S. An irreducible descriptive set for the considered information system S is a minimal (relative to the inclusion) set B of attributes which defines exactly the set Ext(S) by means of true and realizable rules constructed over attributes from the considered set B. We show that there exists only one irreducible descriptive set of attributes. We present a polynomial algorithm for this set construction. We also study relationships between the cardinality of irreducible descriptive set of attributes and the number of attributes in S. The obtained results will be useful for the design of concurrent data models from experimental data. © 2010 Springer-Verlag.
Original languageEnglish (US)
Title of host publicationLecture Notes in Computer Science
PublisherSpringer Nature
Pages92-105
Number of pages14
ISBN (Print)3642114784; 9783642114786
DOIs
StatePublished - 2010

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

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