Effective query expansion for federated search.

@inproceedings{shokouhi-2009-effective, author = {Milad Shokouhi and Leif Azzopardi and Paul Thomas}, editor = {ChengXiang Zhai and James Allan and Javed A. Aslam and Mark Sanderson and ChengXiang Zhai and Javed A. Aslam and Justin Zobel}, title = {{Effective query expansion for federated search}}, booktitle = {{Proceedings of the 32nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2009, Boston, MA, USA, July 19-23, 2009}}, pages = {427--434}, publisher = {ACM}, year = {2009}, url = {https://doi.org/10.1145/1571941.1572015}, doi = {https://doi.org/10.1145/1571941.1572015} }