Table 2.

Recognition accuracy (%) under grey-box attacks with control parameter (Para.) as ϵ in L for BIM, PGD and SPSA. The ensemble size is K = 3. The best performance is marked in bold.

Attacks ImageNet100
Para. Single DEG ADP WC+SWC
No Attack 83.66 84.36 84.68 83.98

PGD 0.003 8.54 62.58 46.12 64.16
0.005 11.23 46.04 29.74 56.44

BIM 0.003 4.38 58.48 40.12 61.62
0.005 2.21 39.26 26.4 51.32

SPSA5 0.003 66.84 78.32 78.42 78.84
0.005 53.88 75.5 68.36 75.84

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