Keyphrases
- pseudo relevance feedback
- query expansion
- retrieval accuracy
- document retrieval
- relevance feedback
- ad hoc retrieval
- query length
- retrieval effectiveness
- average precision
- query specific
- information retrieval systems
- relevance model
- language model
- ad hoc information retrieval
- automatic query expansion
- trec collections
- query terms
- relevant documents
- pseudo feedback
- trec test collections
- original query
- retrieval model
- information retrieval
- language modelling
- retrieved documents
- document ranking
- test collection
- interactive query expansion
- text retrieval
- language modeling
- term selection
- retrieval method
- document collections
- graded relevance assessments
- image retrieval
- retrieval systems
- image database