Analyzing correlation coefficients of objective rule evaluation indices on classification rules

  • Authors:
  • Hidenao Abe;Shusaku Tsumoto

  • Affiliations:
  • Shimane University, Izumo, Shimane, Japan;Shimane University, Izumo, Shimane, Japan

  • Venue:
  • RSKT'08 Proceedings of the 3rd international conference on Rough sets and knowledge technology
  • Year:
  • 2008

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Abstract

In data mining post-processing, which is one of important procedures in a data mining process, at least 39 metrics have been proposed to find out valuable knowledge. However, their functional properties have never been clearly articulated under the same condition. Therefore, we carried out a correlation analysis of functional properties between each objective rule evaluation indices on classification rule sets using correlation coefficients between each index. In this analysis, we calculated average values of each index using bootstrap method on 34 classification rule sets learned based on information gain ratio. Then, we found the following relationships based on correlation coefficient values: similar pairs, discrepant pairs, and independent indices. With regarding to this result, we discuss about relative functional relationships between each group of objective indices.