Keyphrases
- information retrieval
- test collection
- information filtering
- query expansion
- scale space
- information retrieval systems
- text mining
- information extraction
- question answering
- search engine
- retrieval model
- language model
- multiscale
- document collections
- relevant documents
- learning to rank
- language modeling
- information access
- retrieval systems
- image structure
- vector space model
- neural network