@inproceedings{gil-costa2011spire,
  author = {Veronica Gil-Costa and Rodrygo L. T. Santos and Craig Macdonald and Iadh Ounis},
  title = {Sparse spatial selection for novelty-based search result diversification},
  booktitle = {Proceedings of the 18th International Symposium on String Processing and Information Retrieval},
  year = {2011},
  pages = {},
  address = {Pisa, Italy},
  publisher = {Springer},
}