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Prototype theory. Prototype theory is a mode of graded categorization in cognitive science, where some members of a category are more central than others. For example, when asked to give an example of the concept furniture, chair is more frequently cited than, say, stool. Prototype theory has also been applied in linguistics, as part of the mapping from phonological structure to semantics. As formulated in the 1970s by Eleanor Rosch and others, prototype theory was a radical departure from traditional necessary a
Thus instead of a definition based model-e.g. a bird may be defined as elements with the features [+feathers], [+beak] and [+ability to fly], prototype theory would consider a category like bird as consisting of different elements which have unequal status-e.g. a robin is more prototypical of a bird than, say a penguin.ecently, Peter Gaerdenfors (gÃ¤rdenfors) 2000 has elaborated a possible partial explanation of prototype theory in terms of-multi dimensional feature spaces Called Conceptual, spaces where a category is defined in terms of a conceptual. Distance more central members of a category are between the peripheral. members