Maintaining Case-Based Reasoning Systems Using Fuzzy Decision Trees

  • Authors:
  • Simon C. K. Shiu;Cai Hung Sun;Xizhao Wang;Daniel S. Yeung

  • Affiliations:
  • -;-;-;-

  • Venue:
  • EWCBR '00 Proceedings of the 5th European Workshop on Advances in Case-Based Reasoning
  • Year:
  • 2000

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Abstract

This paper proposes a methodology of maintaining Case Based Reasoning (CBR) systems by using fuzzy decision tree induction - a machine learning technique. The methodology is mainly based on the idea that a large case library can be transformed to a small case library together with a group of adaptation rules, which are generated by fuzzy decision trees. Firstly, an approach to learning feature weights automatically is used to evaluate the importance of different features in a given case-base. Secondly, clustering of cases will be carried out to identify different concepts in the case-base using the acquired feature knowledge. Thirdly, adaptation rules will be mined for each concept using fuzzy decision trees. Finally, a selection strategy based on the concepts of Ɛ-coverage and Ɛ-reachability is used to select representative cases. The effectiveness of the method is demonstrated experimentally using two sets of testing data.