The Skin Segmentation feature vectors are samples from the full dataset downloaded from the UC Irvine Machine Learning Repository. Column 1 -> Blue component (0 - 255) Column 2 -> Green component (0 - 255) Column 3 -> Red component (0 - 255) Column 4 -> Class label (1=skin, 2=non-skin) Reference: R. Bhatt and A. Dhall, "Skin segmentation dataset," University of California-Irvine Machine Learning Repository. https://archive.ics.uci.edu/ml/datasets.html