Keyphrases
- structured data
- semi structured
- relational data
- unstructured data
- data sources
- free text
- structured information
- xml documents
- semi structured data
- semistructured data
- information extraction
- text data
- unstructured text
- textual data
- metadata
- keyword search
- linked data
- structured databases
- graph data
- tree structured data
- keyword queries
- structured and unstructured data
- graph based induction
- computational efficiency
- text classification
- graph kernels
- data analysis
- graph structures
- text databases
- tree kernels
- search engine