Keyphrases
- document retrieval
- multimedia
- document collections
- language model
- retrieval model
- information retrieval
- text retrieval
- relevance feedback
- ranking functions
- cross language
- digital libraries
- retrieved documents
- multimedia data
- multimedia databases
- spreading activation
- query independent
- document indexing
- query terms
- learning to rank
- multimedia retrieval
- passage retrieval
- document ranking
- semantic mapping
- document image retrieval
- data sets
- probabilistic model
- inverted index
- training data
- decision trees
- metadata
- e learning