Table 5.

Comparison of Feature Spread (t-SNE Covariance Trace) and Similarity (Wasserstein Distance) between the Union of Public Data Sets and RWD Using Off-the-Shelf ResNet-50 Model

	Between Data Sets				Within Data Sets
Metrics	Publictr	RWDtr	Publicte	RWDte	Publictr	Publicte	RWDtr	RWDte
Feature spread (covariance trace)	0.108	0.108	0.110	0.104	0.108	0.110	0.108	0.104
Feature similarity (Wasserstein distance)	15.8		27.1		0.003		0.003

te, test set; tr, train set.