Cluster-based query expansion using external collections in medical information retrieval.
Heung-Seon OhYuchul JungPublished in: J. Biomed. Informatics (2015)
Keyphrases
- query expansion
- information retrieval
- information retrieval systems
- retrieval effectiveness
- document collections
- language modeling
- language model
- text retrieval
- relevant documents
- retrieval model
- pseudo relevance feedback
- relevance feedback
- query terms
- search engine
- query expansion methods
- model for information retrieval
- ad hoc retrieval
- text mining
- retrieval systems
- improving search
- trec collections
- information extraction
- original query
- term selection
- automatic query expansion
- document retrieval
- natural language processing
- vector space model
- web search
- vocabulary mismatch
- query disambiguation
- relevance model
- information seeking
- document ranking
- patent retrieval
- test collection
- web pages