Query Expansion based on Pseudo Relevance Feedback from Definition Clusters.
Delphine BernhardPublished in: COLING (Posters) (2010)
Keyphrases
- pseudo relevance feedback
- query expansion
- pseudo feedback
- retrieval effectiveness
- information retrieval systems
- ad hoc retrieval
- clustering algorithm
- language model
- expansion terms
- retrieval accuracy
- relevant documents
- language modeling
- automatic query expansion
- language modelling
- information retrieval
- relevance feedback
- trec genomics track
- text retrieval
- retrieved documents
- original query
- relevance model
- trec collections
- query specific
- noun phrases
- retrieval model
- document ranking
- term selection
- average precision
- interactive query expansion
- vocabulary mismatch
- passage retrieval
- short queries
- image retrieval
- multimedia