Maximal consistent block technique for rule acquisition in incomplete information systems

  • Authors:
  • Yee Leung;Deyu Li

  • Affiliations:
  • Department of Geography and Resource Management, Centre for Environmental Policy and Resource Management, and Joint Laboratory for Geoinformation Science, The Chinese University of Hong Kong, Hong ...;Department of Computer Science, Institute of Computer Application, Shanxi University, Taiyuan, Shanxi 030006, China

  • Venue:
  • Information Sciences: an International Journal
  • Year:
  • 2003

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Abstract

In this paper, the concept of a maximal consistent block is applied to formulate a new approximation to an object set in incomplete information systems with higher level of accuracy. Similar to the method in [Inform. Sci. 112 (1998) 39, 113 (1999) 271], the proposed rough-set-based rule acquisition method does not require change in the size of the original incomplete system. It, however, has the additional advantage of using a set of simpler discernibility functions of an incomplete system. This means that it can provide a more efficient computation for knowledge acquisition, especially in large incomplete systems.