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Table 4 State division of residual error value

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

Interval

State

[− 0.36, − 0.24]

State I: too large

[− 0.24, − 0.12]

State II: larger

[− 0.12, 0]

State III: slightly larger

[0, 0.12]

State IV: slightly smaller

[0.12, 1.32]

State V: smaller