Keyphrases
- question answering
- anaphora resolution
- reference resolution
- relation extraction
- natural language processing
- information retrieval
- information extraction
- coreference resolution
- named entities
- noun phrases
- natural language
- passage retrieval
- cross language
- qa clef
- question answering systems
- domain knowledge
- co occurrence
- domain specific
- knowledge representation
- data mining
- machine translation
- natural language text
- query processing
- expert systems
- natural language questions