Table 1.

Division of data into training, validation, and test sets

	Training set	Validation set	Test set
Size (% of total)	122 (59.8%)	41 (20.1%)	41 (20.1%)
Class 1 (negative controls)	36	12	12
Class 2 (contact wounds)	30	10	10
Class 3 (close-range wounds)	29	10	10
Class 4 (distant wounds)	27	9	9