2018
DOI: 10.48550/arxiv.1807.09705
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Limitations of the Lipschitz constant as a defense against adversarial examples

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Cited by 4 publications
(10 citation statements)
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“…However, all traditional networks following this approach are greatly limited; Huster showed that no traditional neural network such as those using the ReLU activation function can act as a universal Lipschitz approximator. Traditional networks must in fact choose between either the expressive power necessary to approximate a function, or the Lipschitz condition [12]. The search continued into non-traditional neural networks, and in 2018 Anil and Lucas showed that by changing out a standard monotonically increasing activation function for a sorting activation function, their networks, given arbitrary depth, form a ULA [1].…”
Section: Related Workmentioning
confidence: 99%
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“…However, all traditional networks following this approach are greatly limited; Huster showed that no traditional neural network such as those using the ReLU activation function can act as a universal Lipschitz approximator. Traditional networks must in fact choose between either the expressive power necessary to approximate a function, or the Lipschitz condition [12]. The search continued into non-traditional neural networks, and in 2018 Anil and Lucas showed that by changing out a standard monotonically increasing activation function for a sorting activation function, their networks, given arbitrary depth, form a ULA [1].…”
Section: Related Workmentioning
confidence: 99%
“…For example, as we alluded to earlier, all differentiable functions with bounded derivative are Lipschitz continuous. Perhaps more importantly, given any finite dataset where different classes are separated in the input space by at least a distance of c, there exists a Lipschitz function with Lipschitz constant c/2 that correctly classifies all points [12]. Therefore, any classification problem can be restated in the structure of a Lipschitz function approximation problem.…”
Section: Definitionsmentioning
confidence: 99%
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“…The Lipschitz constant is utilized to bound DNNs' vulnerability to adversarial attacks [9,10]. As argued in [11,12], however, currently there is no accurate method for estimating the Lipschitz constant, and the resulting overestimation can easily render its use unpractical. [13,14] propose to train a generative model for generating unseen samples for which misclassification happens.…”
Section: Introductionmentioning
confidence: 99%