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Pen Digits Data-set
Pen digits data-set PENDIG. 1500 (of 7494) samples of the
handwritten numerals 0-9 are plotted in gray
arranged by their classes. Their mean is shown superimposed with bold black.
PENDIG clusters. 1500 (of 7494) samples of the handwritten
numerals 0-9 are illustrated arranged by clusters. Strong intra-class variation as e.g., seen in the numeral 5
is disambiguated into several clusters: 5 can be written like a 'S' in one stroke from top to bottom or in two strokes with the top dash last.