Application of Variational Mode Decomposition and k-Nearest Neighbor Algorithm in the Quantitative Nondestructive Testing of Wire Ropes

Table 3

Recognition accuracy for different values of k and percentage error of broken wires is 0.49%.

Accuracy	k = 3	k = 9	k = 16	k = 20
Model 1	81.6%	85.6%	82.4%	82.4%
Model 2	83.2%	86.4%	84%	82.4%
Model 3	84.8%	83.2%	79.2%	80.8%
Model 4	81.6%	81.6%	80.8%	79.2%