Flexible Control of Case-Based Prediction in the Framework of Possibility Theory

  • Authors:
  • Didier Dubois;Eyke Hüllermeier;Henri Prade

  • Affiliations:
  • -;-;-

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

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Abstract

The "similar problem-similar solution" hypothesis underlying case-based reasoning is modelled in the framework of possibility theory and fuzzy sets. Thus, case-based prediction can be realized in the form of fuzzy set-based approximate reasoning. The inference process makes use of fuzzy rules. It is controlled by means of modifier functions actingo n such rules and related similarity measures. Our approach also allows for the incorporation of domain-specific (expert) knowledge concerning the typicality (or exceptionality) of the cases at hand. It thus favors a view of case-based reasoning accordingto which the user interacts closely with the system in order to control the generalization beyond observed data. Our method is compared to instance-based learning and kernel-based density estimation. Loosely speaking, it adopts basic principles of these approaches and supplements them with the capability of combining knowledge and data in a flexible way.