@inproceedings{SIGIR-2015-LiLZS,
	author        = "Qiuchi Li and Jingfei Li and Peng Zhang and Dawei Song",
	booktitle     = "{Proceedings of the 38th International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/2766462.2767819",
	isbn          = "978-1-4503-3621-5",
	pages         = "871--874",
	publisher     = "{ACM}",
	title         = "{Modeling Multi-query Retrieval Tasks Using Density Matrix Transformation}",
	year          = 2015,
}