| Authors |
|
| Publication date |
2009
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| Host editors |
-
E.M. Voorhees
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L.P. Buckland
|
| Book title |
The seventeenth Text REtrieval Conference (TREC 2008) proceedings
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| Event |
17th Text REtrieval Conference (TREC 2008), Gaithersburg, MD, USA
|
| Publisher |
Gaithersburg, MD, USA: National Institute of Standards and Technology (NIST)
|
| Organisations |
-
Faculty of Science (FNWI) - Informatics Institute (IVI)
|
| Abstract |
We describe the participation of the University of Amsterdam’s ILPS group in the relevance feedback track at TREC 2008. We introduce a new model which incorporates information from relevant and non-relevant documents to improve the estimation of query models. Our main findings are twofold: (i) in terms of statMAP, a larger number of judged non-relevant documents improves retrieval effectiveness and (ii) on the TREC Terabyte topics, we can effectively replace the estimates on the judged non-relevant documents with estimations on the document collection.
|
| Document type |
Conference contribution
|
| Language |
English
|
| Published at |
http://trec.nist.gov/pubs/trec17/papers/uamsterdam-derijke.rf.rev.pdf
|
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