Study of Friction and Wear Behavior of Graphene-Reinforced AA7075 Nanocomposites by Machine Learning

Table 3

Performance of coefficient of friction prediction models.

Machine learning model	ANN	KNN	RF	SVM	GBM
Mean absolute error	0.0342	0.0415	0.0252	0.0347	0.0225
Mean squared error	0.0038	0.0047	0.0014	0.0035	0.0013
Root mean squared error	0.0625	0.0695	0.0375	0.0593	0.0367
R^2 value	0.8943	0.8695	0.9637	0.9043	0.9642

GBM, gradient boosting machine; SVM, support vector machine.