X. Dong, A. Halevy, and J. Madhavan. SIGMOD '05: Proceedings of the 2005 ACM SIGMOD international conference on Management of data, page 85--96. New York, NY, USA, ACM Press, (2005)
V. Chakaravarthy, H. Gupta, P. Roy, and M. Mohania. VLDB '06: Proceedings of the 32nd international conference on Very large data bases, page 667--678. VLDB Endowment, (2006)
B. Wellner, A. Mccallum, F. Peng, and M. Hay. AUAI '04: Proceedings of the 20th conference on Uncertainty in artificial intelligence, page 593--601. Arlington, Virginia, United States, AUAI Press, (2004)
Z. Nie, Y. Ma, S. Shi, J. Wen, and W. Ma. WWW '07: Proceedings of the 16th international conference on World Wide Web, page 81--90. New York, NY, USA, ACM, (2007)
T. Cheng, X. Yan, and K. Chang. VLDB '07: Proceedings of the 33rd international conference on Very large data bases, page 387--398. VLDB Endowment, (2007)
R. Baeza-Yates, and R. Ramakrishnan. EDBT '08: Proceedings of the 11th international conference on Extending database technology, page 652--655. New York, NY, USA, ACM, (2008)