Demystifying adversarial attacks on neural networks

• Main Author: Yip, Lionell En Zhi
• Other Authors: Anupam Chattopadhyay
• Format: Final Year Project
• Language: English
• Published: Nanyang Technological University 2020
• Subjects: Engineering::Computer science and engineering::Computing methodologies::Artificial intelligence
• Online Access: https://hdl.handle.net/10356/137946
• Institution: Nanyang Technological University

Prevalent use of Neural Networks for Classification Tasks has brought to attention the security and integrity of the Neural Networks that industries are so reliant on. Adversarial examples are conspicuous to humans, but neural networks struggle to correctly classify images with the presence of adversarial perturbations. I introduce a framework for understanding how neural networks perceive inputs, and its relation to adversarial attack methods. I demonstrate that there is no correlation between the region of importance and the region of attack. I demonstrate that a frequently perturbed region of an adversarial example across a class in a data-set exists. I attempt to improve classification performance by exploiting the differences of input and adversarial attack, and I demonstrate a novel augmentation method for improving prediction performance of adversarial samples.