How Many (Polymorphic) Frames? Classic KR
         in the World Wide Web

                               Aldo Gangemi

  LIPN University Paris13-CNRS-Sorbonne France, ISTC-CNR Rome Italy



  Abstract. The good old notion of frame, as introduced in the seven-
  ties, is a natural hub for cognitive sciences, knowledge representation,
  and natural language understanding. Developments in the last ten years,
  mainly due to the socio-technical ontology of the Web, have apparently
  changed the nature and scale of the notion, and pose new challenges. I
  will present a bird’s eye view of the current situation, with a quick glance
  at human-robot interfaces.