Web-Based Unsupervised Learning for Query Formulation in Question Answering.
Yi-Chia WangJian-Cheng WuTyne LiangJason S. ChangPublished in: IJCNLP (2005)
Keyphrases
- question answering
- query formulation
- unsupervised learning
- supervised learning
- information extraction
- information retrieval
- natural language processing
- named entities
- natural language questions
- semi supervised
- cross language
- natural language
- machine learning
- question classification
- dimensionality reduction
- passage retrieval
- syntactic information
- question answering systems
- multimedia
- information retrieval systems
- semantic roles
- answer extraction
- qa clef
- answering questions
- candidate answers
- web search
- knowledge representation