Keyphrases
- document retrieval
- document collections
- language model
- information retrieval
- text retrieval
- retrieval model
- ranking functions
- pseudo relevance feedback
- learning to rank
- relevant documents
- databases
- spreading activation
- cross language
- inverted index
- bayesian networks
- document indexing
- retrieval strategies
- relevance feedback
- document ranking
- retrieved documents
- passage retrieval
- digital libraries
- relational databases
- query terms
- query independent
- query processing
- semantic mapping