Mining Numerical Data--A Rough Set Approach

  • Authors:
  • Jerzy W. Grzymala-Busse

  • Affiliations:
  • Department of Electrical Engineering and Computer Science, University of Kansas, Lawrence, KS 66045, USA and Institute of Computer Science Polish Academy of Sciences, 01-237 Warsaw, Poland

  • Venue:
  • RSEISP '07 Proceedings of the international conference on Rough Sets and Intelligent Systems Paradigms
  • Year:
  • 2007

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Abstract

We present an approach to mining numerical data based on rough set theory using calculus of attribute-value blocks. An algorithm implementing these ideas, called MLEM2, induces high quality rules in terms of both simplicity (number of rules and total number of conditions) and accuracy. Additionally, MLEM2 induces rules not only from complete data sets but also from data with missing attribute values, with or without numerical attributes.