Keyphrases
- text retrieval
- digital libraries
- document collections
- query expansion
- document retrieval
- inverted file
- image retrieval
- information retrieval
- metadata
- retrieval systems
- multimedia information retrieval
- information access
- multimedia
- latent semantic indexing
- cross language
- retrieval model
- document image analysis
- keyword extraction
- automatic query expansion
- retrieval quality
- learning algorithm
- multimedia retrieval
- database
- language model
- textual information retrieval
- relevant documents
- web documents
- search engine
- databases