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Home > Generalization

• every instance of concept B is also an instance of concept A; and
• there are instances of concept A which are not instances of concept B.

Equivalently, A is a generalization of B if B is a specialization of A.

For instance, animal is a generalization of bird because every bird is an animal, and there are animals which are not birds ( dogs, for instance).

This kind of generalization versus specialization (or particularization) is reflected in either of the contrasting words of the word pair hypernym and hyponym. A hypernym as a generic stands for a class or group of equally-ranked items, such as tree does for beech and oak; or ship for cruiser and steamer. Whereas a hyponym is one of the items included in the generic, such as lily and daisy are included in flower, and bird and fish in animal. A hypernym is superordinate to a hyponym, and a hyponym is subordinate to hypernym.

See also:

• inheritance (object-oriented programming),
• faulty generalization
• hasty generalization
• -onym

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Topics: Generalization Concept Hyponym Hypernym Instance Bird Animal...

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GeneralizationConcept A is a generalization of concept B if and only if: every instance of concept B is also an instance of concept A; and there are instances of concept A which are not instances of concept B. Equivalently, A is a generalization of B if B is a speciali Generalization (logic)Model theory Logic Generalization is an inference rule of Predicate Calculus which states that: If is true ( valid) then so is. Generalization" can be abbreviated as GEN and the inference rule can be summarized as the sequent : , but this gives rise to an