Keyphrases
- structured data
- semi structured
- information extraction
- unstructured data
- free text
- relational data
- keyword search
- textual data
- linked data
- xml documents
- data sources
- metadata
- semi structured data
- structured information
- graph data
- semistructured data
- structured and unstructured data
- keyword queries
- unstructured text
- structured databases
- database
- text data
- genetic programming
- decision trees
- information retrieval
- parse tree
- databases
- data sets