S. Mizzaro, M. Pavan, I. Scagnetto, and I. Zanello. A context-aware retrieval system for mobile applications. In Proceedings of the 4th Workshop on Context-Awareness in Retrieval and Recommendation (CARR ’14). ACM, New York, NY, USA, 18-25. DOI=10.1145/2601301.2601305 http://doi.acm.org/10.1145/2601301.2601305