Attention before using!!!

[winterwindwang]

Firstly, modify the theta to 0.2 in universal_pert.py, otherwise, the algorithm will fall into an endless loop (the default setting set the target fooling to 98%).
Secondly, assign the parameters "epsilon" the 47-th line in search.py to xi, like
v = universal_perturbation(X, val_loader, net, xi=epsilon)

[qilong-zhang]

Hi @winterwindwang, thank you very much for pointing out these bugs, which may have been caused by an oversight in my previous upload. I have fixed them, thanks again!