The Gap Index quantifies visual distortion in empty regions of DR scatterplots via Delaunay triangle area deformation and is more sensitive to salient gap artifacts than stress or trustworthiness.
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Measuring Distortion in the Empty Regions of Dimensionality Reduction Scatterplots with the Gap Index
The Gap Index quantifies visual distortion in empty regions of DR scatterplots via Delaunay triangle area deformation and is more sensitive to salient gap artifacts than stress or trustworthiness.