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The model described here, which links olfactory semantic profiles to canonical similarities, performs significantly better than the current state of the art, mainly due to the use of an optimization procedure. Application of Tversky's model in this study shows that in olfaction, estimation of similarities is based exclusively on the distinctive elements of the profiles, and does not take into account the common elements. Moreover, the optimum number of descriptors to reckon with seems to lie between 25 and 30.
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Callegari et al. (1997) studied this question.
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