Keyphrases
- information retrieval
- information retrieval systems
- information access
- game theory
- search engine
- question answering
- information extraction
- text mining
- retrieval systems
- data sets
- text retrieval
- tf idf
- real time
- information filtering
- vector space model
- information seeking
- document retrieval
- relevant documents
- resource allocation
- test collection
- electronic commerce
- query expansion
- image retrieval
- multi agent systems