Remaining Useful Life Prediction of High-Frequency Swing Self-Lubricating Liner

Table 1

The RMSE, MAE, and SMAPE of the predicted values.

Indicator	4		5		6
	Original wear data	Grey processing data	Original wear data	Grey processing data	Original wear data	Grey processing data
RMSE	0.6293	0.2516	0.2054	0.2331	0.9360	0.4874
MAE	0.5498	0.1581	0.1846	0.1886	0.8192	0.3597
SMAPE	34.60%	9.30%	9.60%	8.64%	26.59%	13.33%