Keyphrases
- focused crawling
- web documents
- focused crawler
- topic specific
- information extraction
- web pages
- domain knowledge
- semi structured
- semantic web
- domain specific
- web search engines
- domain ontology
- keywords
- semantic information
- knowledge base
- vector space model
- ontology mapping
- semantic interoperability
- probabilistic model
- data sources
- web data
- document representation
- low level