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Creating Abstract Concepts for Classification by Finding Top-N Maximal Weighted Cliques

  • Yoshiaki Okubo
  • Makoto Haraguchi
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2843)

Abstract

This paper presents a method for creating abstract concepts for classification rule mining. We try to find abstract concepts that are useful for the classification in the sense that assuming such a concept can well discriminate a target class and supports data as much as possible. Our task of finding useful concepts is formalized as an optimization problem in which its constraint and objective function are given by entropy and probability of class distributions, respectively. Concepts to be found can be stated in terms of maximal weighted cliques in a graph constructed from the possible distributions. From the graph, as useful abstract concepts, top-N maximal weighted cliques are efficiently extracted with two pruning techniques: branch-and-bound and entropy-based pruning. It is shown that our entropy-based pruning can safely prune only useless cliques by adding distributions in increasing order of their entropy in the process of clique expansion. Preliminary experimental results show that useful concepts can be created in our framework.

Keywords

Abstract Concept Class Distribution Rule Mining Target Attribute Discrimination Ability 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • Yoshiaki Okubo
    • 1
  • Makoto Haraguchi
    • 1
  1. 1.Division of Electronics and Information EngineeringHokkaido UniversitySapporoJAPAN

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