Clustering

Semantic Clustering by Adopting Nearest Neighbours

Introduced by Gansbeke et al. in SCAN: Learning to Classify Images without Labels

SCAN automatically groups images into semantically meaningful clusters when ground-truth annotations are absent. SCAN is a two-step approach where feature learning and clustering are decoupled. First, a self-supervised task is employed to obtain semantically meaningful features. Second, the obtained features are used as a prior in a learnable clustering approach.

Image source: Gansbeke et al.

Source: SCAN: Learning to Classify Images without Labels

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