Cluster-Based Query Expansion for Statistical Question Answering.
Lucian Vlad LitaJaime G. CarbonellPublished in: IJCNLP (2008)
Keyphrases
- query expansion
- question answering
- passage retrieval
- information retrieval
- sentence retrieval
- language model
- information retrieval systems
- retrieval effectiveness
- named entities
- relevant documents
- language modeling
- relevance feedback
- pseudo relevance feedback
- text retrieval
- retrieval model
- cross language
- natural language processing
- natural language
- query translation
- information extraction
- query terms
- document retrieval
- retrieved documents
- short queries
- named entity recognition