Keyphrases
- information retrieval systems
- information retrieval
- retrieval quality
- retrieved documents
- query expansion
- documents retrieved
- web search
- document collections
- information access
- document indexing
- inverted file
- learning to rank
- relevant documents
- retrieval effectiveness
- user queries
- ranking algorithm
- xml retrieval
- retrieval systems
- search queries
- user feedback
- ranking functions
- relevance feedback
- search engine
- keyword queries
- structured documents
- database
- retrieval engine
- text retrieval systems
- interactive information retrieval systems