Table 7.

Classification accuracy of different tongue colors (%).

Amplification	LibSVM		Random forest
	NO	YES	NO	YES
Pale	31.1	92.9	71.1	91.8
Light red	94.1	59.4	87.9	70.7
Crimson	5.7	84.5	68.6	85.3
Red	43.9	70.5	57.9	83.5
Purplish	47.6	91.8	55.5	93.3