Shawn R. Jeffery, Michael J. Franklin, Alon Y. Halevy. Pay-as-you-go user feedback for dataspace systems. In Jason Tsong-Li Wang, editor, Proceedings of the ACM SIGMOD International Conference on Management of Data, SIGMOD 2008, Vancouver, BC, Canada, June 10-12, 2008. pages 847-860, ACM, 2008. [doi]
Abstract is missing.