@inproceedings{SontagEtAl_uai08,
 title  = {Tightening {LP} Relaxations for {MAP} using Message-Passing},
 author = {David Sontag and Talya Meltzer and Amir Globerson and Yair Weiss and Tommi Jaakkola},
 pages     = {503-510},
 booktitle = {24th Conference in Uncertainty in Artificial Intelligence},
 publisher = {AUAI Press},
 year = {2008}
}