Choosing Classes In Conceptual Modeling

  title={Choosing Classes In Conceptual Modeling},
  author={Jeffrey Parsons and Yair Wand},
  journal={Commun. ACM},
ion from Instances. A class can be defined only if there are instances in the relevant universe possessing all properties defining the class. Adherence to this principle supports the fundamental meaning of concept—a specification of the properties common to some instances. If no instances from the relevant universe share a specified set of properties, there is no “sameness” and no economy of representation. It would be cognitively wasteful to store such a set of properties as a concept, as it… CONTINUE READING
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