Flexible Pseudo-Relevance Feedback for NTCIR-2.
Tetsuya SakaiStephen E. RobertsonStephen WalkerPublished in: NTCIR (2001)
Keyphrases
- pseudo relevance feedback
- retrieval effectiveness
- test collection
- patent retrieval
- query expansion
- average precision
- relevant documents
- document retrieval
- language model
- ad hoc retrieval
- prior art
- retrieval accuracy
- evaluation metrics
- relevance feedback
- relevance model
- retrieved documents
- automatic query expansion
- query terms
- interactive query expansion
- original query
- retrieval model
- information retrieval
- information retrieval systems
- query translation
- document collections
- cross language information retrieval
- language modeling
- retrieval systems
- search tasks
- ranked list
- learning to rank
- precision and recall
- text retrieval
- relevance assessments
- patent documents
- short queries