Keyphrases
- ir evaluation
- test collection
- patent retrieval
- information retrieval
- question answering
- web retrieval
- retrieval effectiveness
- evaluation framework
- graded relevance
- passage retrieval
- relevance assessments
- retrieval model
- information retrieval systems
- query expansion
- evaluation metrics
- qa clef
- statistical significance
- open domain
- relevant documents
- question classification
- open domain question answering
- distributed information retrieval
- query translation
- average precision
- text retrieval
- language model