Keyphrases
- web search engines
- web search
- search engine
- query logs
- search result
- special issue
- web pages
- web queries
- ranking functions
- user queries
- web documents
- query suggestion
- search queries
- web server
- relevance judgments
- search sessions
- web searching
- search logs
- machine learning
- information sources
- search quality
- desired information
- web search queries