Conditional importance networks: a graphical language for representing ordinal, monotonic preferences over sets of goods

  • Authors:
  • Sylvain Bouveret;Ulle Endriss;Jérôme Lang

  • Affiliations:
  • ONERA, DTIM, Toulouse, France;ILLC, University of Amsterdam;LAMSADE, Université Paris-Dauphine

  • Venue:
  • IJCAI'09 Proceedings of the 21st international jont conference on Artifical intelligence
  • Year:
  • 2009

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Abstract

While there are several languages for representing combinatorial preferences over sets of alternatives, none of these are well-suited to the representation of ordinal preferences over sets of goods (which are typically required to be monotonic). We propose such a language, taking inspiration from previous work on graphical languages for preference representation, specifically CP-nets, and introduce conditional importance networks (CI-nets). A CI-net includes statements of the form "if I have a set A of goods, and I do not have any of the goods from some other set B, then I prefer the set of goods C over the set of goods D." We investigate expressivity and complexity issues for CI-nets. Then we show that CI-nets are well-suited to the description of fair division problems.