Keyphrases
- document retrieval
- query processing
- inverted index
- query terms
- retrieval strategies
- result set
- query independent
- language model
- document collections
- information retrieval
- retrieval quality
- relevant documents
- retrieval model
- learning to rank
- focused retrieval
- text retrieval
- relevance feedback
- pseudo relevance feedback
- ranking functions
- retrieve documents
- user queries
- spreading activation
- search queries
- range queries
- document indexing
- ad hoc retrieval
- database systems
- relevance model
- language modeling
- query logs
- relevance judgments
- document ranking
- retrieval systems
- database
- feature extraction
- retrieval process
- skyline queries
- passage retrieval
- web search engines
- question answering systems
- feature selection
- databases
- retrieval effectiveness