G. Fulantelli, I. Marenzi, Q. Ahmad, and D. Taibi. Proceedings of the Second International Workshop on Search as Learning, SAL 2016, co-located with the 39th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2016, Pisa, Italy, July 21st, 2016., volume 1647 of CEUR Workshop Proceedings, CEUR-WS.org, (2016)