Keyphrases
- text retrieval
- spoken document retrieval
- cross language
- n gram
- information retrieval
- image retrieval
- latent semantic indexing
- inverted file
- query expansion
- retrieval systems
- keyword extraction
- document collections
- document retrieval
- multimedia retrieval
- speech recognition
- retrieval model
- retrieval quality
- automatic query expansion
- search engine
- databases
- test collection
- training set
- textual information retrieval