Keyphrases
- text retrieval
- retrieval model
- information retrieval
- query expansion
- document retrieval
- inverted file
- multimedia retrieval
- retrieval systems
- latent semantic indexing
- keyword extraction
- image retrieval
- cross language
- document collections
- textual information retrieval
- retrieval quality
- document clustering
- information retrieval systems
- e learning
- machine learning
- automatic query expansion
- databases