Industrial Engineering and Management Systems

Korean Institute of Industrial Engineers (대한산업공학회)
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Rule Induction Considering Implication Relations Between Conclusions

  • Inuiguchi, Masahiro (Department of Systems Innovation Graduate School of Engineering Science, Osaka University) ;
  • Inoue, Masanori (Department of Systems Innovation Graduate School of Engineering Science, Osaka University) ;
  • Kusunoki, Yoshifumi (Division of Electrical, Electronic and Information Engineering Graduate School of Engineering, Osaka University)
  • Received : 2011.01.18
  • Accepted : 2011.02.21
  • Published : 2011.03.01
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Abstract

In rough set literatures, methods for inducing minimal rules from a given decision table have been proposed. When the decision attribute is ordinal, inducing rules about upward and downward unions of decision classes is advantageous in the simplicity of obtained rules. However, because of independent applications of the rule induction method, inclusion relations among upward/downward unions in conclusion parts are not inherited to the condition parts of obtained rules. This non-inheritance may debase the quality of obtained rules. To ensure that inclusion relations among conclusions are inherited to conditions, we propose two rule induction approaches. The performances of the proposed approaches considering the inclusion relations between conclusions are examined by numerical experiments.

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References

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