@inproceedings{SIGIR-2013-GaoXX,
	author        = "Jianfeng Gao and Gu Xu and Jinxi Xu",
	booktitle     = "{Proceedings of the 36th International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/2484028.2484058",
	isbn          = "978-1-4503-2034-4",
	pages         = "563--572",
	publisher     = "{ACM}",
	title         = "{Query expansion using path-constrained random walks}",
	year          = 2013,
}