Roi Blanco, Paolo Boldi. Extending BM25 with multiple query operators. In William R. Hersh, Jamie Callan, Yoelle Maarek, Mark Sanderson, editors, The 35th International ACM SIGIR conference on research and development in Information Retrieval, SIGIR '12, Portland, OR, USA, August 12-16, 2012. pages 921-930, ACM, 2012. [doi]
Abstract is missing.