@incollection{NIPS2008_0518,
 title = {Global Ranking Using Continuous Conditional Random Fields},
 author = {Tao Qin and Tie-Yan Liu and Xu-Dong Zhang and De-Sheng Wang and Hang Li},
 booktitle = {Advances in Neural Information Processing Systems 21},
 editor = {D. Koller and D. Schuurmans and Y. Bengio and L. Bottou},
 pages = {1281--1288},
 year = {2009}
}