TABLE 3.

Classification performance of different neighbor numbers.

Method	ACC (%) ± STD	SEN (%) ± STD	SPE (%) ± STD	AUC ± STD
k = 1	81.5969 ± 0.2353	77.2330 ± 0.2969	85.9607 ± 0.4100	0.8984 ± 0.0018
k = 3	82.1424 ± 0.3034	76.7742 ± 0.3528	87.5105 ± 0.4055	0.8988 ± 0.0011
k = 5	82.2696 ± 0.2158	77.1900 ± 0.4619	87.3492 ± 0.2770	0.8984 ± 0.0010
k = 6	81.9266 ± 0.3825	76.2796 ± 0.6879	87.5736 ± 0.2972	0.9001 ± 0.0015
k = 7	82.4946 ± 0.2827	77.2473 ± 0.5747	87.7419 ± 0.2286	0.9021 ± 0.0007
k = 8	82.2076 ± 0.1873	76.9677 ± 0.4484	87.4474 ± 0.2582	0.9003 ± 0.0013
k = 9	81.9021 ± 0.2479	76.2867 ± 0.3729	87.5175 ± 0.2706	0.8997 ± 0.0015
k = 10	81.6502 ± 0.3456	76.0143 ± 0.3929	87.2861 ± 0.4948	0.8977 ± 0.0014
k = 15	81.5525 ± 0.2362	75.7348 ± 0.2989	87.3703 ± 0.2506	0.8954 ± 0.0011