Keyphrases
- semi structured data
- web mining
- structured data
- semi structured
- web data
- xml data
- mining frequent
- xml documents
- database
- xml query languages
- ordered trees
- query language
- recursive queries
- heterogeneous data
- databases
- frequent patterns
- web documents
- data model
- unstructured data
- tree structured data
- unordered trees
- natural language processing
- graph databases
- path expressions
- data structure
- metadata