Keyphrases
- web search engines
- search engine
- web search
- web documents
- search result
- query logs
- web pages
- relevance judgments
- search quality
- user queries
- web server
- web queries
- ranking functions
- search queries
- keyword search
- query suggestion
- desired information
- commercial search engines
- machine learning
- internet search engines
- information sources
- information retrieval systems
- response time
- information retrieval