@InProceedings{C12-1098,
  author = 	"Li, Jiwei
		and Li, Sujian
		and Wang, Xun
		and Tian, Ye
		and Chang, Baobao",
  title = 	"Update Summarization using a Multi-level Hierarchical Dirichlet Process Model",
  booktitle = 	"Proceedings of COLING 2012",
  year = 	"2012",
  publisher = 	"The COLING 2012 Organizing Committee",
  pages = 	"1603--1618",
  location = 	"Mumbai, India",
  url = 	"http://aclweb.org/anthology/C12-1098"
}