Keyphrases
- open domain
- semantic parsing
- question answering
- information extraction
- dependency parsing
- semantic roles
- question answering systems
- natural language
- natural language processing
- semantic role labeling
- semantic representation
- information retrieval
- natural language understanding
- relation extraction
- cross language
- named entities
- context free grammars
- statistical machine translation
- probabilistic model
- unknown words
- knowledge base
- machine learning