Robust result merging using sample-based score estimates

@article{Shokouhi2009RobustRM,
  title={Robust result merging using sample-based score estimates},
  author={Milad Shokouhi and Justin Zobel},
  journal={ACM Trans. Inf. Syst.},
  year={2009},
  volume={27},
  pages={14:1-14:29}
}
In federated information retrieval, a query is routed to multiple collections and a single answer list is constructed by combining the results. Such metasearch provides a mechanism for locating documents on the hidden Web and, by use of sampling, can proceed even when the collections are uncooperative. However, the similarity scores for documents returned from different collections are not comparable, and, in uncooperative environments, document scores are unlikely to be reported. We introduce… CONTINUE READING

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