For FGSM, how would the resulting adversarial examples be different if I changed the attack from untargeted to targeted? I'm not sure I understand how a targeted attack works. Please advise. Thanks. AT
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Suppose you have a photo of a cat.An untargeted attack has the goal of changing the photo to no longer be labeled as a cat. The attack succeeds if it can change the output of the model to 'dog', 'car', etc.A targeted attack has the goal of causing the model to output a specific target class. Suppose the target is 'car'. If the attack causes the photo of the cat to be labeled 'dog', it is not considered a success for the attacker. It is only a success if the output class becomes 'car'.FGSM does only one gradient step, so it is usually not flexible / powerful enough to succeed as a targeted attack.
On Tue, Dec 18, 2018 at 11:47 AM 'ephi...@yahoo.com' via cleverhans dev <cleverhans-dev@googlegroups.com> wrote:
For FGSM, how would the resulting adversarial examples be different if I changed the attack from untargeted to targeted? I'm not sure I understand how a targeted attack works. Please advise. Thanks. AT--
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