Keyphrases
- structured data
- semi structured
- information extraction
- semi structured data
- unstructured data
- xml documents
- relational data
- structured information
- data sources
- graph structures
- linked data
- semistructured data
- structured databases
- keyword search
- free text
- graph data
- textual data
- metadata
- graph databases
- data sets
- graph kernels
- unstructured text
- information retrieval
- databases