Keyphrases
- text mining
- information retrieval
- database
- website
- databases
- text retrieval
- web documents
- semantic web
- knowledge base
- keywords
- metadata
- key concepts
- semantic web data
- text information
- document analysis
- formal semantics
- automatically extracted
- topic maps
- relational data
- data mining
- text documents
- semantic information
- machine learning
- search engine
- description logics
- feature selection
- knowledge representation
- data sources
- query language
- relational databases