Foundation Settlement Prediction Based on a Novel NGM Model

Table 2

The predictive values and errors of GM (1,1) model and NGM (1,1,𝑘) model.

	Original value	NGM (1,1,𝑘) model		GM (1,1) model
		Predictive value 𝑥^(0)(𝑘)	Error 𝜀(𝑘)	Predictive value 𝑥^(0)(𝑘)	Error 𝜀(𝑘)
𝑥^(0) (7)	15.750	13.129	16.642	15.344	2.576
𝑥^(0) (8)	17.899	13.319	25.591	16.992	5.067
𝑥^(0) (9)	20.479	13.425	34.448	18.818	8.111