Keyphrases
- information retrieval
- information retrieval systems
- information access
- vector space model
- learning to rank
- retrieval systems
- information extraction
- search engine
- text mining
- uc berkeley
- learning objects
- digital libraries
- artificial intelligence
- relevance feedback
- language model
- document collections
- retrieval model
- retrieval effectiveness
- metadata
- neural network
- latent semantic indexing
- document repositories
- database