[Retracted] Economic Decision-Making Algorithm for Cross-Border Industrial E-Commerce Material Purchase Quantity Based on Markov Chain

Table 1

G.M. (1, 1) model accuracy comparison standard.

Prediction accuracy level	Relative error	Probability of small error	Mean square error ratio
Good	0.01	≥0.95	≤0.35
Qualified	0.05	(0.8, 0.95)	(0.35, 0.50)
General	0.10	(0.7, 0.8)	(0.50, 0.65)
Unqualified	0.20	≤0.7	≥0.65