Keyphrases
- semantic relations
- set valued attributes
- background knowledge
- medical images
- three dimensional
- conceptual graphs
- knowledge representation
- semantic web
- databases
- automatically created
- domain ontology
- lexical resources
- set valued
- biomedical ontologies
- ontology learning
- web resources
- relational information
- owl ontologies
- information integration
- spatial relations
- knowledge base
- medical terminology
- dl lite
- semantic relationships
- semantic web technologies
- integrity constraints