论文标题
感知深度神经网络:通过输入娱乐的对抗性鲁棒性
Perceptual Deep Neural Networks: Adversarial Robustness through Input Recreation
论文作者
论文摘要
对抗性的例子表明,尽管机器学到的模型与人类不同,但与人类不同的模型具有许多弱点。但是,人类的看法也与机器根本不同,因为我们看不到到达视网膜的信号,而是对它们的复杂娱乐。在本文中,我们探讨了机器如何重新创建输入以及调查这种增强感知的好处。在这方面,我们提出了感知性深神经网络($φ$ dnn),该网络还会在进一步处理之前重新创建自己的意见。该概念在数学上是形式化的,并且开发了两个变体(一个基于整个图像的含量,另一个基于嘈杂的评估超级分辨率娱乐)。实验表明,$φ$ dnns及其对抗性训练变化可以大大提高鲁棒性,超过100%测试中的最新防御和预处理类型的防御类型。 $φ$ dnns显示出可以很好地扩展到更大的图像尺寸,从而保持相似的高精度;而最先进的则恶化高达35%。此外,娱乐过程有意损坏输入图像。有趣的是,我们通过消融测试表明,损坏输入是违反直觉的,有益的。因此,$φ$ dnns表明,输入娱乐对类似于生物学的人工神经网络具有很大的好处,从而使有目的地破坏输入的重要性以及开创了基于gans和自动装编码器的感知模型的重要性,以在人工机器人情报中识别出可靠的认识。
Adversarial examples have shown that albeit highly accurate, models learned by machines, differently from humans, have many weaknesses. However, humans' perception is also fundamentally different from machines, because we do not see the signals which arrive at the retina but a rather complex recreation of them. In this paper, we explore how machines could recreate the input as well as investigate the benefits of such an augmented perception. In this regard, we propose Perceptual Deep Neural Networks ($φ$DNN) which also recreate their own input before further processing. The concept is formalized mathematically and two variations of it are developed (one based on inpainting the whole image and the other based on a noisy resized super resolution recreation). Experiments reveal that $φ$DNNs and their adversarial training variations can increase the robustness substantially, surpassing both state-of-the-art defenses and pre-processing types of defenses in 100% of the tests. $φ$DNNs are shown to scale well to bigger image sizes, keeping a similar high accuracy throughout; while the state-of-the-art worsen up to 35%. Moreover, the recreation process intentionally corrupts the input image. Interestingly, we show by ablation tests that corrupting the input is, although counter-intuitive, beneficial. Thus, $φ$DNNs reveal that input recreation has strong benefits for artificial neural networks similar to biological ones, shedding light into the importance of purposely corrupting the input as well as pioneering an area of perception models based on GANs and autoencoders for robust recognition in artificial intelligence.