Classes, resources, … (cont.)

• Relationships are defined among classes/resources:

• • “typing”: an individual belongs to a specific class (“«The Glass Palace» is a novel”)
  • • to be more precise: “«http://.../000651409X» is a novel”
  • “subclassing”: all instances of one are also the instances of the other (“every novel is a fiction”)

• RDFS formalizes these notions in RDF