Keyphrases
- semantic mappings
- semantic mapping
- peer to peer
- metadata
- ontology mapping
- data sources
- semantic heterogeneity
- multiple data sources
- domain ontology
- data model
- description logics
- databases
- document retrieval
- digital libraries
- semi automatic
- structural constraints
- semantic interoperability
- information retrieval systems
- query interface
- query language
- information retrieval
- multi source
- information integration
- xml schema
- wordnet
- information sources