Experiments on a Multinomial Language Model versus Lucene's Off-the-Shelf Ranking Scheme and Rocchio Query Expansion (TEL@CLEF Monolingual Task).
Jorge MachadoBruno MartinsJosé BorbinhaPublished in: CLEF (2008)
Keyphrases
- query expansion
- ranking scheme
- language model
- probabilistic model
- language modeling
- ad hoc retrieval
- document retrieval
- retrieval effectiveness
- pseudo relevance feedback
- text classification
- retrieval model
- text retrieval
- information retrieval
- n gram
- passage retrieval
- cross lingual
- text categorization
- relevant documents
- cross language retrieval
- query terms
- query specific
- document ranking
- query translation
- relevance model
- automatic query expansion
- test collection
- smoothing methods
- cross language
- translation model
- language modeling framework
- multiword
- vector space model
- question answering
- generative model
- statistical machine translation
- retrieved documents
- average precision
- out of vocabulary
- information retrieval systems
- pseudo feedback
- relevance feedback