Keyphrases
- question answering
- natural language
- semantic parsing
- information extraction
- information retrieval
- natural language processing
- semantic roles
- question classification
- cross language
- syntactic information
- open domain question answering
- natural language questions
- sentence retrieval
- high level
- passage retrieval
- answer extraction
- question answering systems
- visual information
- qa clef
- semantic features
- low level
- named entities
- artificial intelligence
- relation extraction
- visual features
- semantic information
- language model
- wordnet
- context dependent
- semantic similarity