Keyphrases
- structured data
- semi structured
- free text
- news articles
- relational data
- semi structured data
- information extraction
- data sources
- structured information
- unstructured data
- unstructured text
- xml documents
- metadata
- news stories
- social media
- linked data
- structured and unstructured data
- keyword search
- keyword queries
- text data
- semistructured data
- database
- tree structured data
- structured databases
- text databases
- keywords
- databases