Chemnitz at CLEF 2009 Ad-Hoc TEL Task: Combining Different Retrieval Models and Addressing the Multilinguality.
Jens KürstenPublished in: CLEF (Working Notes) (2009)
Keyphrases
- retrieval model
- test collection
- query expansion
- information retrieval
- language model
- language modeling
- retrieval effectiveness
- passage retrieval
- document retrieval
- information retrieval systems
- text retrieval
- statistical language models
- retrieval systems
- vector space model
- vector space
- ad hoc retrieval
- question answering
- relevance feedback
- cross lingual
- retrieval functions
- retrieval framework
- relevant documents
- tf idf
- cross language
- user queries
- relevance judgments
- retrieval process
- document collections
- similarity measure
- pseudo relevance feedback
- xml retrieval
- co occurrence
- keywords
- learning environment
- image retrieval
- query translation
- probabilistic model
- information extraction
- trec collections
- database systems