@article{DelgrandeSchaubTompitsetal.2004,
  author    = {Delgrande, James Patrick and Schaub, Torsten H. and Tompits, Hans and Wang, Kewen},
  title     = {A classification and survey of preference handling approchaches in nonmonotonic reasoning},
  issn      = {0824-7935},
  year      = {2004},
  abstract  = {In recent years, there has been a large amount of disparate work concerning the representation and reasoning with qualitative preferential information by means of approaches to nonmonotonic reasoning. Given the variety of underlying systems, assumptions, motivations, and intuitions, it is difficult to compare or relate one approach with another. Here, we present an overview and classification for approaches to dealing with preference. A set of criteria for classifying approaches is given, followed by a set of desiderata that an approach might be expected to satisfy. A comprehensive set of approaches is subsequently given and classified with respect to these sets of underlying principles},
  language  = {en}
}
@article{SchaubWang2003,
  author    = {Schaub, Torsten H. and Wang, Kewen},
  title     = {A semantic framework for prefernce handling in answer set programming},
  year      = {2003},
  language  = {en}
}
@article{DelgrandeSchaubTompitsetal.2002,
  author    = {Delgrande, James Patrick and Schaub, Torsten H. and Tompits, Hans and Wang, Kewen},
  title     = {Towards a classification of preference handling approaches in nonmonotonic reasoning},
  isbn      = {1-577-35166-5},
  year      = {2002},
  language  = {en}
}
@article{Wang2001,
  author    = {Wang, Kewen},
  title     = {A comparative study of disjunctive well-founded semantics},
  isbn      = {3-540-42593-4},
  year      = {2001},
  language  = {en}
}
@article{SchaubWang2001,
  author    = {Schaub, Torsten H. and Wang, Kewen},
  title     = {A comparative study of logic programs with preference},
  year      = {2001},
  language  = {en}
}
@article{Wang2001,
  author    = {Wang, Kewen},
  title     = {Disjunctive well-founded semantics revisited},
  year      = {2001},
  language  = {en}
}
@article{Wang2001,
  author    = {Wang, Kewen},
  title     = {A top-down procedure for disjucntive well-founded semantics},
  year      = {2001},
  language  = {en}
}
@article{WangZhou2001,
  author    = {Wang, Kewen and Zhou, Lizhu},
  title     = {An extension to GCWA and query evaluation for disjunctive deductive databases},
  year      = {2001},
  language  = {en}
}
@article{SchaubWang2001,
  author    = {Schaub, Torsten H. and Wang, Kewen},
  title     = {A comparative study of logic programs with preference},
  isbn      = {1-558-60777-3},
  issn      = {1045-0823},
  year      = {2001},
  language  = {en}
}
@article{Wang2001,
  author    = {Wang, Kewen},
  title     = {A top-down procedure for disjucntive well-founded semantics},
  isbn      = {3-540-42254-4},
  year      = {2001},
  language  = {en}
}