Spatial similarity (inter-cluster distance correlation)

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Spatial similarity (inter-cluster distance correlation)

Techniqueadvanced

Pearson correlation between two representations' DirectProbe inter-cluster-distance vectors (one entry per label pair), testing whether a transformation (fine-tuning, or a train/test split) preserves the relative geometric arrangement of a task's convex label-clusters rather than comparing raw pairwise-point distances directly.

Used in (1 observation)

Fine-tuning widens convex-cluster margins without rearranging the geometrymeasured

structure: Linear Separability · models: BERT-tiny, BERT-mini, BERT-small, BERT-medium, BERT-base-uncased · paper: A Closer Look at How Fine-tuning Changes BERT