Passage Retrieval vs. Document Retrieval in the CLEF 2006 Ad Hoc Monolingual Tasks with the IR-n System.
Elisa NogueraFernando LlopisPublished in: CLEF (2006)
Keyphrases
- passage retrieval
- document retrieval
- question answering
- information retrieval
- retrieval model
- language model
- question answering systems
- cross language
- document collections
- text retrieval
- document ranking
- query expansion
- relevance feedback
- focused retrieval
- short queries
- query terms
- document structure
- pseudo relevance feedback
- sentence retrieval
- relevance model
- relevant documents
- retrieval effectiveness
- xml retrieval
- free text
- probabilistic model
- database systems