- Think of well known in traditional ontologies:
- use the term “mammal”
- “every dolphin is a mammal”
- “Flipper is a dolphin”
- etc.
- RDFS defines the terms of resources and classes:
- everything in RDF is a “resource”
- “classes” are also resources, but…
- they are also a collection of possible resources (i.e., individuals)
- (e.g., “mammal”, “dolphin”)
- Relationships are defined among classes/resources:
- “typing”: an individual belongs to a specific class
- (e.g., “Flipper is a dolphin”)
- “subclassing”: instance of one is also the instance of the other
- (e.g., “every dolphin is a mammal”)