Keyphrases
- approximate reasoning
- semistructured data
- query language
- regular expressions
- structured data
- data model
- fuzzy logic
- semi structured
- fuzzy sets
- rough set theory
- fuzzy reasoning
- database systems
- production rules
- heterogeneous data
- raw data
- tree patterns
- semistructured databases
- rough sets
- web data
- xml documents
- regular path queries
- multimedia databases
- knowledge discovery
- pattern matching
- information extraction
- keywords