Keyphrases
- document retrieval
- language model
- document collections
- retrieval model
- information retrieval
- text retrieval
- document indexing
- ranking functions
- relevant documents
- relevance feedback
- learning to rank
- document image retrieval
- passage retrieval
- cross language
- retrieved documents
- query independent
- metadata
- language modeling
- inverted index
- pseudo relevance feedback
- retrieval strategies
- query terms
- spreading activation
- document ranking
- information retrieval systems