Testing an Entity Ranking Function for English Factoid QA.
Kui-Lam KwokNorbert DinstlPublished in: TREC (2007)
Keyphrases
- ranking functions
- question answering
- open domain
- cross language
- named entities
- answer extraction
- qa clef
- document retrieval
- learning to rank
- natural language
- information extraction
- ranking algorithm
- passage retrieval
- web search
- semantic roles
- web search engines
- information retrieval
- ranking svm
- natural language processing
- qa systems
- question answering systems
- syntactic information
- language learning
- cross lingual
- supervised learning
- language model
- text retrieval
- machine learning
- digital libraries
- reinforcement learning
- training data
- ranking scheme
- feature extraction
- directly optimize