Keyphrases
- information retrieval
- information retrieval evaluation
- search engine
- information retrieval systems
- information access
- text mining
- information extraction
- document collections
- digital libraries
- databases
- retrieval model
- retrieval systems
- co occurrence
- information filtering
- vector space model
- language modeling
- test collection
- query expansion
- case study
- metadata
- information systems
- artificial intelligence
- data mining