@inproceedings{CIKM-2013-ZhuZPWZY,
	author        = "Yin Zhu and ErHeng Zhong and Sinno Jialin Pan and Xiao Wang and Minzhe Zhou and Qiang Yang",
	booktitle     = "{Proceedings of the 22nd ACM International Conference on Information and Knowledge Management}",
	doi           = "10.1145/2505515.2505518",
	isbn          = "978-1-4503-2263-8",
	pages         = "159--168",
	publisher     = "{ACM}",
	title         = "{Predicting user activity level in social networks}",
	year          = 2013,
}