Keyphrases
- web retrieval
- ad hoc retrieval
- test collection
- query expansion
- patent retrieval
- query translation
- information retrieval
- retrieval effectiveness
- ir evaluation
- search engine
- cross language information retrieval
- cross lingual information retrieval
- web search
- english chinese
- retrieval systems
- information retrieval systems
- relevance feedback
- evaluation framework
- document collections
- domain specific
- passage retrieval
- graded relevance
- cross language
- cross lingual
- relevant documents
- question answering
- average precision
- bi directional
- relevance assessments
- text retrieval
- retrieval model
- document retrieval
- search tasks
- language modeling
- machine translation
- information retrieval evaluation
- language model