Keyphrases
- web documents
- flexible querying
- data model
- information extraction
- spatio temporal databases
- semi structured
- web pages
- keywords
- web search engines
- web content
- html documents
- prefetching
- unstructured documents
- database
- web logs
- data sources
- data types
- database management systems
- focused crawling
- moving objects
- website
- information retrieval