Defence against adversarial attacks using classical and quantum-enhanced Boltzmann machines

• URL: http://arxiv.org/abs/2012.11619v1
• Date: Mon, 21 Dec 2020 19:00:03 GMT
• Title: Defence against adversarial attacks using classical and quantum-enhanced Boltzmann machines
• Authors: Aidan Kehoe, Peter Wittek, Yanbo Xue, Alejandro Pozas-Kerstjens
• Abstract summary: generative models attempt to learn the distribution underlying a dataset, making them inherently more robust to small perturbations. We find improvements ranging from 5% to 72% against attacks with Boltzmann machines on the MNIST dataset.
• Score: 64.62510681492994
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We provide a robust defence to adversarial attacks on discriminative algorithms. Neural networks are naturally vulnerable to small, tailored perturbations in the input data that lead to wrong predictions. On the contrary, generative models attempt to learn the distribution underlying a dataset, making them inherently more robust to small perturbations. We use Boltzmann machines for discrimination purposes as attack-resistant classifiers, and compare them against standard state-of-the-art adversarial defences. We find improvements ranging from 5% to 72% against attacks with Boltzmann machines on the MNIST dataset. We furthermore complement the training with quantum-enhanced sampling from the D-Wave 2000Q annealer, finding results comparable with classical techniques and with marginal improvements in some cases. These results underline the relevance of probabilistic methods in constructing neural networks and demonstrate the power of quantum computers, even with limited hardware capabilities. This work is dedicated to the memory of Peter Wittek.

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