Keyphrases
- digital libraries
- information retrieval
- information access
- lessons learned
- advanced technology
- multimedia systems
- document collections
- effective retrieval
- metadata
- information retrieval systems
- open issues
- key issues
- computational advertising
- resource discovery
- information extraction
- query expansion
- information filtering
- technical challenges
- search engine
- technology advances
- retrieval systems
- retrieval effectiveness
- test collection
- cultural heritage
- term weighting
- peer to peer
- text mining
- real world
- data sets