Unstructuring User Preferences: Efficient Non-Parametric Utility   Revelation
  Tackling the problem of ordinal preference revelation and reasoning, we propose a novel methodology for generating an ordinal utility function from a set of qualitative preference statements. To the best of our knowledge, our proposal constitutes the first nonparametric solution for this problem that is both efficient and semantically sound. Our initial experiments provide strong evidence for practical effectiveness of our approach. 
Carmel Domshlak, Thorsten Joachims
cs.AI cs.GT