Utility in hint generation: Selection of hints from a corpus of student work

  • Authors:
  • John Stamper;Tiffany Barnes

  • Affiliations:
  • Department of Computer Science, University of North Carolina at Charlotte;Department of Computer Science, University of North Carolina at Charlotte

  • Venue:
  • Proceedings of the 2009 conference on Artificial Intelligence in Education: Building Learning Systems that Care: From Knowledge Representation to Affective Modelling
  • Year:
  • 2009

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Abstract

We have developed a tool for generating hints within computer-aided instructional tools based on a corpus of student work. This tool allows us to select source problem solutions that match the current user solution and generate hints based on next problem steps that are most likely to lead to a successful solution. However, within such a tool it is possible to generate hints that did not turn out to be useful in the source problem solution. Therefore, we have proposed a metric to measure and integrate a “utility” function to choose source material for hint generation. In this paper we present our metric and an experiment to investigate its use on real data from a logic proof tutorial.