Operational Efficiency Forecasting Model of an Existing Underground Mine Using Grey System Theory and Stochastic Diffusion Processes

Table 5

Error estimation of the model.

Error	Year
	1	2	3	4	5
DOL-observed values	1.219	1.421	1.333	1.676	1.437
DOL-fitted values	1.219	1.073	1.350	1.649	1.255
RPE (%)	0	24.47	1.28	1.63	12.70
ARPE (%)	10.02