Sludge Bulking Prediction Using Principle Component Regression and Artificial Neural Network

Table 6

Performance indexes of the PCR and ANN prediction models.

Performance index	Accuracy performance (training set)		Generalization performance (testing set)
	PCR	ANN	PCR	ANN
𝑅^2	0.689	0.901	0.772	0.907
RMSE	37.360	21.141	31.673	20.258
MAE	28.524	16.375	24.490	15.899