The impact of corpus size on question answering performance.
Charles L. A. ClarkeGordon V. CormackM. LaszloThomas R. LynamEgidio L. TerraPublished in: SIGIR (2002)
Keyphrases
- question answering
- semantic roles
- natural language
- natural language processing
- information extraction
- question answering systems
- question classification
- syntactic information
- qa clef
- passage retrieval
- cross language
- relation extraction
- information retrieval
- natural language questions
- sentence retrieval
- named entities
- semantic parsing
- relational databases
- machine learning
- test set
- open domain question answering