@article{VLDB-2017-ZhangWYJ16,
	author        = "Xuhong Zhang 0002 and Jun Wang 0001 and Jiangling Yin and Shouling Ji",
	doi           = "10.14778/3021924.3021928",
	ee            = "http://www.vldb.org/pvldb/vol10/p109-zhang.pdf",
	journal       = "{Proceedings of the VLDB Endowment}",
	number        = 3,
	pages         = "109--120",
	title         = "{Sapprox: Enabling Efficient and Accurate Approximations on Sub-datasets with Distribution-aware Online Sampling}",
	volume        = 10,
	year          = 2016,
}