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Confusion matrix with actual and predicted labels for test: (a) normal, (b) near-normal, (c) mild, (d) moderate, (e) severe, and (f) complete paralysis. Class 0 refers to neutral face, class 1 to eyebrow elevation, class 2 to eye closure, class 3 to wide-open smile, class 4 to closed mouth smile, and class 5 to pucker.
