Keyphrases
- web search engines
- web search
- search engine
- query logs
- search result
- user queries
- web documents
- web pages
- domain specific
- domain ontology
- search queries
- web queries
- ranking functions
- relevance judgments
- machine learning
- semantic web
- desired information
- search sessions
- web searching
- keyword search
- query suggestion
- interactive information retrieval
- commercial search engines