@inproceedings {4626,
	title = {A Cascade Ranking Model for Efficient Ranked Retrieval},
	booktitle = {International Conference on Research and Development in Information Retrieval (SIGIR)},
	year = {2011},
	doi = {10.1145/2009916.2009934},
	author = {Lidan Wang and Jimmy Lin and Donald Metzler}
}
