@incollection{NIPS2007_630,
 title = {Discriminative Log-Linear Grammars with Latent Variables},
 author = {Slav Petrov and Dan Klein},
 booktitle = {Advances in Neural Information Processing Systems 20},
 editor = {J.C. Platt and D. Koller and Y. Singer and S. Roweis},
 publisher = {MIT Press},
 address = {Cambridge, MA},
 pages = {1153--1160},
 year = {2008}
}