Liu, J., Liu, C., Gwizdka, J. & Belkin, N.J. (2010) Can search systems detect users’ task difficulties? Some behavioral signals. In Proceedings of the 2010 ACM SIGIR International Conference on Research and Development in Information Retrieval (SIGIR 2010) (pp. 845-846). New York: ACM.

Proceedings of the 2010 ACM SIGIR International Conference on Research and Development in Information Retrieval (SIGIR 2010)