Extending BM25 with multiple query operators

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]

@inproceedings{BlancoB12,
  title = {Extending BM25 with multiple query operators},
  author = {Roi Blanco and Paolo Boldi},
  year = {2012},
  doi = {10.1145/2348283.2348406},
  url = {http://doi.acm.org/10.1145/2348283.2348406},
  researchr = {https://researchr.org/publication/BlancoB12},
  cites = {0},
  citedby = {0},
  pages = {921-930},
  booktitle = {The 35th International ACM SIGIR conference on research and development in Information Retrieval, SIGIR '12, Portland, OR, USA, August 12-16, 2012},
  editor = {William R. Hersh and Jamie Callan and Yoelle Maarek and Mark Sanderson},
  publisher = {ACM},
  isbn = {978-1-4503-1472-5},
}