The Use of External Knowledge of Factoid QA.
Eduard H. HovyUlf HermjakobChin-Yew LinPublished in: TREC (2001)
Keyphrases
- external knowledge
- question answering
- open domain
- domain knowledge
- wordnet
- qa systems
- text categorization
- natural language processing
- passage retrieval
- answer extraction
- information extraction
- knowledge sources
- information retrieval
- textual information
- document clustering
- natural language
- named entities
- semantic features
- bag of words
- web directories
- domain specific
- knowledge base
- feature selection
- search engine
- machine learning
- data mining