@inproceedings{conf/adt15/liuT,
  author = {Xudong Liu and Miroslaw Truszczynski},
  booktitle = {Proceedings of the 4th International Conference on Algorithmic Decision Theory (ADT)},
  publisher = {Springer (Acceptance rate: <font color="red">42%</font>)},
  %publisher = {Springer},
  title = {Reasoning with Preference Trees over Combinatorial Domains},
  url_Paper = {http://xudongliu.domains.unf.edu/resources/ptrees_adt15.pdf},
  isbn = {978-3-319-23113-6},
  pages = {19-34},
  volume = 9346,
  abstract = {Preference trees, or P-trees for short, offer an intuitive and
    often concise way of representing preferences over combinatorial domains.
    In this paper, we propose an alternative definition of p-trees, and formally
    define their compact representation that exploits occurrences of
    identical subtrees. We show that p-trees generalize lexicographic preference
    trees and are strictly more expressive. We relate p-trees to answer-set 
	optimization programs and possibilistic logic theories. Finally, we
    study reasoning with p-trees and establish computational complexity
    results for key reasoning tasks of comparing outcomes with respect to
    orders defined by p-trees, and of finding optimal outcomes.},
  year = 2015
}

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