Keyphrases
- text retrieval
- peer to peer
- resource discovery
- information retrieval
- cross language
- query expansion
- inverted file
- latent semantic indexing
- document retrieval
- retrieval model
- retrieval systems
- document collections
- retrieval quality
- keyword extraction
- image retrieval
- digital libraries
- databases
- probabilistic model
- multimedia retrieval
- search engine
- handwritten documents
- text representation
- automatic query expansion