What makes a query difficult?

David Carmel, Elad Yom-Tov, Adam Darlow, Dan Pelleg. What makes a query difficult?. In Efthimis N. Efthimiadis, Susan T. Dumais, David Hawking, Kalervo Järvelin, editors, SIGIR 2006: Proceedings of the 29th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Seattle, Washington, USA, August 6-11, 2006. pages 390-397, ACM, 2006. [doi]


Abstract is missing.