Keyphrases
- semi structured
- web data
- structured data
- web documents
- data model
- information extraction
- information integration
- semi structured data
- data extraction
- text mining
- web data sources
- web usage mining
- deep web
- web sources
- web information
- structured knowledge
- web information extraction
- semistructured data
- link structure
- heterogeneous data
- database
- natural language processing
- page contents