Keyphrases
- information retrieval
- information retrieval systems
- search engine
- information access
- vector space model
- document collections
- test collection
- question answering
- language model
- retrieval systems
- link analysis
- information seeking
- language modeling
- neural network
- latent semantic indexing
- probability ranking principle
- language processing
- ir evaluation
- retrieval model
- document retrieval
- query expansion
- web search
- information extraction
- data mining