Application of Grey Deformation Prediction Model Optimized by Double Coefficient for Tailings Dam

Table 1

Four calculation models.

Number	Model	Weightcoefficient	Autocorrelationcoefficient
1	GM (1,1)	0.5	Unreferenced
2	GM-LT	0.5	Unreferenced
3	GM-WC	Iterative calculation	Unreferenced
4	GDPM-DC	Iterative calculation	Autocorrelation calculation

Note. GM-WC is short for the grey model optimized by weight coefficient.