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

Table 2

Recognition accuracy for different values of k and percentage error of broken wires is 0.93%.

Accuracy	k = 3	k = 9	k = 16	k = 20
Model 1	97.6%	98.4%	96.8%	95.2%
Model 2	92.8%	95.2%	95.2%	96%
Model 3	94.4%	96%	96%	97.6%
Model 4	96.8%	98.4%	97.6%	97.6%