Core items are centroids in latent space

Consonant with spatial metaphors used for latent space navigation, the semantically central items in a collection of discrete items are found closest to their “center” in latent space. This can be applied to sentences forextractive text summarization, concepts for identifying “core” concepts, or pictures for finding the representative ones. This is perfectly compatible with the perspective of concepts being based on prototypes, rather than exemplars.

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