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  • Yiyu Yao
  • Mathematics, Computer Science
  • Inf. Sci.
  • 2010 (First Publication: 1 February 2010)
  • The rough set theory approximates a concept by three regions, namely, the positive, boundary and negative regions. Rules constructed from the three regions are associated with different actions andExpand
  • Yiyu Yao
  • Mathematics, Computer Science
  • Int. J. Approx. Reason.
  • 2008 (First Publication: 1 October 2008)
  • Probabilistic approaches have been applied to the theory of rough set in several forms, including decision-theoretic analysis, variable precision analysis, and information-theoretic analysis. BasedExpand
  • Yiyu Yao, Bingxue Yao
  • Computer Science, Mathematics
  • Inf. Sci.
  • 2012 (First Publication: 1 October 2012)
  • We propose a framework for the study of covering based rough set approximations. Three equivalent formulations of the classical rough sets are examined by using equivalence relations, partitions, andExpand