Machine Learning (ML) has indeed been undergoing rapid expansion and integration across many fields, revolutionizing how we approach problems and enhancing our ability to extract valuable insights from data. This transformative technology is becoming increasingly ubiquitous in modern science, technology, and industry, driving innovation and reshaping various sectors.
However, despite their uses, accuracy, and sophistication, these machine learning and neural networks can be easily fooled by adversarial attacks, which maliciously tamper their data, causing them to fail surprisingly. This has been a big problem with neural networks challenging their effectiveness and accuracy. Persisting susceptibility to such attacks also raises critical concerns regarding the safety of implementing machine learning neural networks in situations that could potentially endanger lives. This encompasses use cases such as autonomous vehicles, where the system might be led astray into traversing an intersection due to an apparently harmless alteration on a stop sign, underscoring the necessity for rigorous safeguards and countermeasures.
Consequently, there have been significant efforts to strengthen neural networks against these adversarial attacks. Various quantum machine learning algorithms have been studied and proposed, including quantum generalizations of the standard classical methods to tackle adversarial attacks. Quantum machine learning theories suggest that quantum models can acquire specific types of data significantly faster than any existing classical computational models.
While classical computers process data using binary bits, which have two possible states (“zero” or “one”), quantum computers utilize “qubits.” These qubits represent states within two-level quantum systems, and they possess peculiar extra attributes that can be exploited to address particular problems more effectively than classical systems.
Researchers from Australia investigated QAML(Quantum Adversarial Machine Learning) across various well-known image datasets, including MNIST, FMNIST, CIFAR and Celeb-A images. Also, the researchers implemented three different types of adversarial attacks: PGD, FGSM, and AutoAttack on these varied datasets. These image-classifying models can be easily fooled and manipulated by altering their input images and can be exploited.
The researchers conducted a comprehensive series of quantum and classical simulations spanning those various image datasets. They also crafted a diverse set of adversarial attacks to evaluate the outcomes rigorously. The findings encompass examining and comparing the classical (quantum) networks against quantum (classical) adversarial attacks. Adversarial attacks work by identifying and exploiting the features used by a machine learning model.
The basis for this approach is that both networks (quantum and classical) will make the same predictions under normal conditions. But when the conditions are altered, the results will be varied and thus can be investigated.
The evident distinction in defense mechanisms between classical and quantum systems originates from Quantum Variational Classifiers (QVCs) acquiring a unique and notably meaningful spectrum of features, setting them apart from classical networks. This discrepancy stems from the reliance of classical networks on informative yet comparatively less resilient data features.
However, the attributes harnessed by generic quantum machine learning models remain beyond the reach of classical computers, thus remaining imperceptible to adversaries equipped solely with classical computing resources.
The observations of this study hints at a potential quantum advantage in the realm of machine learning tasks. This arises due to the distinctive capability of quantum computers to efficiently learn a broader spectrum of models compared to their classical counterparts. Yet, it’s important to note that the practical utility of these new models for many real-world machine-learning tasks, such as medical classification problems or generative AI systems, remains uncertain.
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Rachit Ranjan is a consulting intern at MarktechPost . He is currently pursuing his B.Tech from Indian Institute of Technology(IIT) Patna . He is actively shaping his career in the field of Artificial Intelligence and Data Science and is passionate and dedicated for exploring these fields.