Keyphrases
- question answering
- natural language
- semantic parsing
- semantic roles
- question answering systems
- passage retrieval
- named entities
- information retrieval
- question classification
- qa clef
- semantic information
- information extraction
- natural language processing
- answer extraction
- relation extraction
- answer validation
- cross language
- syntactic information
- candidate answers
- sentence retrieval
- natural language questions
- semantic representation
- qa systems
- semantic similarity
- machine learning
- semantic analysis
- machine translation
- structured data