Keyphrases
- data model
- document images
- database
- query language
- document collections
- information retrieval systems
- information retrieval
- database systems
- databases
- document retrieval
- data integration
- relational algebra
- document classification
- document clustering
- conceptual model
- vector space model
- semi structured
- semantic information
- text documents
- web documents
- retrieval systems
- object oriented
- xml documents
- document representation
- document analysis
- electronic documents
- entity relationship
- schema evolution
- semistructured data
- document set
- structured documents
- object model
- relevant documents
- data sources
- data mining