In knowledge representation, a class is a collection of individuals or individuals objects. A class can be defined either by extension (specifying members), or by intension (specifying conditions). According to the type–token distinction, the ontology is divided into individuals, who are real worlds objects, or events, and types, or classes, who are sets of real world objects. Class expressions or definitions gives the properties that the individuals must fulfill to be members of the class. Individuals that fulfill the property are called instances (as in the computing concept).
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Class (knowledge representation) in the context of Process of concept formation
Concept formation is the basis for inductive thinking model. It requires presentation of examples. Concept formation is the process of sorting out given examples into meaningful classes. In inductive thinking model students group examples together on some basis and form as many groups as they can, each group illustrating a different concept.
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