The Start of Combustion Prediction for Methane-Fueled HCCI Engines: Traditional vs. Machine Learning Methods

Table 2

The performance of SAM.

	Train data		Test data
Total cases	1177	100.00%	253	100.00%
Residual less than 2 CAD	831	70.60%	226	89.33%
Residual less than 3 CAD	1016	86.32%	227	89.72%
Residual less than 4 CAD	1152	97.88%	237	93.68%
Mean absolute error (MAE)	1.4279		0.9897
Mean squared error (MSE)	3.3918		2.6933
RMSE	1.8417		1.6411