Keyphrases
- text retrieval
- information retrieval
- cross language
- retrieval systems
- image retrieval
- query expansion
- multimedia retrieval
- latent semantic indexing
- multimedia
- document collections
- retrieval model
- retrieval quality
- multimedia information retrieval
- inverted file
- keyword extraction
- blind relevance feedback
- visual information
- document retrieval
- search engine
- database
- text classification
- retrieval strategies
- co occurrence
- automatic query expansion
- databases