Keyphrases
- document retrieval
- language model
- document collections
- information retrieval
- text retrieval
- ranking functions
- relevance feedback
- learning to rank
- retrieval model
- document indexing
- relevant documents
- spreading activation
- query terms
- retrieved documents
- database
- cross language
- passage retrieval
- document ranking
- query independent
- document image retrieval
- test collection
- xml retrieval
- pseudo relevance feedback