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Chinese Journal of Mechanical Engineering

Table 1 Check table of Grey model accuracy

From: Digital Twin-based Quality Management Method for the Assembly Process of Aerospace Products with the Grey-Markov Model and Apriori Algorithm

Grade

Average relative error q

Ratio of MSE C

Residual probability P

I

<0.01

<0.35

>0.95

II

<0.05

<0.50

<0.80

III

<0.10

<0.65

<0.70

IV

>0.20

>0.65

<0.60

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