Characterizations of attributes in generalized approximation representation spaces

  • Authors:
  • Guo-Fang Qiu;Wen-Xiu Zhang;Wei-Zhi Wu

  • Affiliations:
  • The College of Management, Zhejiang University, Hangzhou, Zhejiang, P.R.China;Faculty of Science, Institute for Information and System Sciences, Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China;Information College, Zhejiang Ocean University, Zhoushan, Zhejiang, P.R.China

  • Venue:
  • RSFDGrC'05 Proceedings of the 10th international conference on Rough Sets, Fuzzy Sets, Data Mining, and Granular Computing - Volume Part I
  • Year:
  • 2005

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Abstract

We discuss characterizations of three important types of attribute sets in generalized approximation representation spaces, in which binary relations on the universe are reflexive. Many information tables, such as consistent or inconsistent decision tables, variable precision rough set models, consistent decision tables with ordered valued domains and with continuous valued domains, and decision tables with fuzzy decisions, can be unified to generalized approximation representation spaces. A general approach to knowledge reduction based on rough set theory is proposed.