Ricardo A. Baeza-Yates, Vanessa Murdock, Claudia Hauff. Efficiency trade-offs in two-tier web search systems. In James Allan, Javed A. Aslam, Mark Sanderson, ChengXiang Zhai, Justin Zobel, editors, Proceedings of the 32nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2009, Boston, MA, USA, July 19-23, 2009. pages 163-170, ACM, 2009. [doi]
Abstract is missing.