J. Tang, S. Chang, C. Aggarwal, and H. Liu. Proceedings of the Eighth ACM International Conference on Web Search and Data Mining, page 87--96. New York, NY, USA, ACM, (2015)
Y. Sun, J. Han, C. Aggarwal, and N. Chawla. Proceedings of the fifth ACM international conference on Web search and data mining, page 663--672. New York, NY, USA, ACM, (2012)