Assessing Confidence in Cased Based Reuse Step

  • Authors:
  • F. Alejandro García;Javier Orozco;Jordi Gonzàlez

  • Affiliations:
  • Artificial Intelligence Research Institute IIIA-CSIC, Campus UAB, 08193 Bellaterra, Spain;Computer Vision Center CVC & Dept. de Cièències de la Computació, Edifici O, Campus UAB, 08193 Bellaterra, Spain;Institut de Robòtica i Informàtica Industrial UPC-CSIC, C. Llorens i Artigas 4-6, 08028, Barcelona, Spain

  • Venue:
  • Proceedings of the 2007 conference on Artificial Intelligence Research and Development
  • Year:
  • 2007

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Abstract

Case-Based Reasoning (CBR) is a learning approach that solves current situations by reusing previous solutions that are stored in a case base. In the CBR cycle the reuse step plays an important role into the problem solving process, since the solution for a new problem is based in the available solutions of the retrieved cases. In classification tasks a trivial reuse method is commonly used, which takes into account the most frequently solution proposed by the set of retrieved cases. We propose an alternative reuse process; we call confidence-reuse method, which make a qualitative assessment of the information retrieved. This approach is focused on measuring the solution accuracy, applying some confidence predictors based in a k-NN classifier with the aim of analyzing and evaluating the information offered by the retrieved cases.