Improving Question Answering Based on Query Expansion with Wikipedia.
Yajie MiaoXin SuChunping LiPublished in: ICTAI (2) (2010)
Keyphrases
- query expansion
- question answering
- information retrieval
- passage retrieval
- named entities
- sentence retrieval
- information retrieval systems
- retrieval effectiveness
- pseudo relevance feedback
- language model
- natural language processing
- language modeling
- information extraction
- relevance feedback
- text retrieval
- named entity recognition
- query terms
- retrieval model
- relevant documents
- natural language
- document collections
- cross language
- test collection
- semantic relations
- probabilistic model
- relevance model
- knowledge base
- feature selection
- text documents
- semantic information
- query logs
- ranked list
- active learning