Keyphrases
- question answering
- nearest neighbor
- natural language processing
- information extraction
- named entities
- information retrieval
- question classification
- passage retrieval
- natural language
- natural language questions
- syntactic information
- question answering systems
- active learning
- cross language
- qa systems
- qa clef
- relation extraction
- open domain
- answer extraction
- sentence retrieval
- semantic roles
- semantic analysis
- semantic parsing
- relational databases
- textual entailment recognition