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Biologically inspired strategies have long been adapted to swarm robotic systems, including biased random walks, reaction to chemotactic cues and long-range coordination. In this paper we apply analysis tools developed for modeling…

Autonomous robots are commonly tasked with the problem of area exploration and search for certain targets or artifacts of interest to be tracked. Traditionally, the problem formulation considered is that of complete search and thus -…

机器人学 · 计算机科学 2018-12-13 Christos Papachristos , Kostas Alexis

Event-based dynamic vision sensors provide very sparse output in the form of spikes, which makes them suitable for low-power applications. Convolutional spiking neural networks model such event-based data and develop their full…

计算机视觉与模式识别 · 计算机科学 2022-12-06 Julian Büchel , Gregor Lenz , Yalun Hu , Sadique Sheik , Martino Sorbaro

Machine learning (ML), especially deep neural networks (DNNs) have been widely used in various applications, including several safety-critical ones (e.g. autonomous driving). As a result, recent research about adversarial examples has…

机器学习 · 计算机科学 2020-05-29 Huichen Li , Xiaojun Xu , Xiaolu Zhang , Shuang Yang , Bo Li

Strong adversarial examples are crucial for evaluating and enhancing the robustness of deep neural networks. However, the performance of popular attacks is usually sensitive, for instance, to minor image transformations, stemming from…

机器学习 · 计算机科学 2024-04-01 Zhengwei Fang , Rui Wang , Tao Huang , Liping Jing

Adversarial examples pose a threat to deep neural network models in a variety of scenarios, from settings where the adversary has complete knowledge of the model in a "white box" setting and to the opposite in a "black box" setting. In this…

机器学习 · 计算机科学 2021-07-09 Daniel Park , Haidar Khan , Azer Khan , Alex Gittens , Bülent Yener

Clustering algorithms are used in a large number of applications and play an important role in modern machine learning-- yet, adversarial attacks on clustering algorithms seem to be broadly overlooked unlike supervised learning. In this…

机器学习 · 计算机科学 2019-11-19 Anshuman Chhabra , Abhishek Roy , Prasant Mohapatra

Automatic differentiation variational inference (ADVI) offers fast and easy-to-use posterior approximation in multiple modern probabilistic programming languages. However, its stochastic optimizer lacks clear convergence criteria and…

机器学习 · 计算机科学 2024-04-18 Ryan Giordano , Martin Ingram , Tamara Broderick

Adversarial attacks on tabular data present unique challenges due to the heterogeneous nature of mixed categorical and numerical features. Unlike images where pixel perturbations maintain visual similarity, tabular data lacks intuitive…

机器学习 · 计算机科学 2025-11-24 Zhipeng He , Alexander Stevens , Chun Ouyang , Johannes De Smedt , Alistair Barros , Catarina Moreira

The majority of adversarial attack techniques perform well against deep face recognition when the full knowledge of the system is revealed (\emph{white-box}). However, such techniques act unsuccessfully in the gray-box setting where the…

计算机视觉与模式识别 · 计算机科学 2022-01-13 Hanrui Wang , Shuo Wang , Zhe Jin , Yandan Wang , Cunjian Chen , Massimo Tistarell

Research in adversarial learning follows a cat and mouse game between attackers and defenders where attacks are proposed, they are mitigated by new defenses, and subsequently new attacks are proposed that break earlier defenses, and so on.…

机器学习 · 计算机科学 2020-11-13 Ambar Pal , René Vidal

We investigate a L\'evy-Walk alternating between velocities $\pm v_0$ with opposite sign. The sojourn time probability distribution at large times is a power law lacking its mean or second moment. The first case corresponds to a ballistic…

统计力学 · 物理学 2014-06-03 D. Froemberg , E. Barkai

We study the quantum walk subjected to measurements with a L\'evy waiting-time distribution. We find that the system has a sub-ballistic behavior instead of a diffusive one. We obtain an analytical expression for the exponent of the power…

量子物理 · 物理学 2009-11-13 Alejandro Romanelli

We investigate conditions under which test statistics exist that can reliably detect examples, which have been adversarially manipulated in a white-box attack. These statistics can be easily computed and calibrated by randomly corrupting…

机器学习 · 计算机科学 2019-05-10 Kevin Roth , Yannic Kilcher , Thomas Hofmann

In the present work we study classifiers' decision boundaries via Brownian motion processes in ambient data space and associated probabilistic techniques. Intuitively, our ideas correspond to placing a heat source at the decision boundary…

机器学习 · 计算机科学 2021-01-18 Bogdan Georgiev , Lukas Franken , Mayukh Mukherjee

The L\'evy walk is a non-Brownian random walk model that has been found to describe anomalous dynamic phenomena in diverse fields ranging from biology over quantum physics to ecology. Recurrently occurring problems are to examine whether…

生物物理 · 物理学 2021-07-13 Seongyu Park , Samudrajit Thapa , Yeongjin Kim , Michael A. Lomholt , Jae-Hyung Jeon

In Virtual Reality (VR), adversarial attack remains a significant security threat. Most deep learning-based methods for physical and digital adversarial attacks focus on enhancing attack performance by crafting adversarial examples that…

计算机视觉与模式识别 · 计算机科学 2024-03-25 Qianyu Guo , Jiaming Fu , Yawen Lu , Dongming Gan

We study the problem of efficient adversarial attacks on tree based ensembles such as gradient boosting decision trees (GBDTs) and random forests (RFs). Since these models are non-continuous step functions and gradient does not exist, most…

机器学习 · 计算机科学 2020-10-23 Chong Zhang , Huan Zhang , Cho-Jui Hsieh

Research on adversarial examples in computer vision tasks has shown that small, often imperceptible changes to an image can induce misclassification, which has security implications for a wide range of image processing systems. Considering…

计算机视觉与模式识别 · 计算机科学 2019-04-05 Jérôme Rony , Luiz G. Hafemann , Luiz S. Oliveira , Ismail Ben Ayed , Robert Sabourin , Eric Granger

Adversarial attack perturbs an image with an imperceptible noise, leading to incorrect model prediction. Recently, a few works showed inherent bias associated with such attack (robustness bias), where certain subgroups in a dataset (e.g.…

计算机视觉与模式识别 · 计算机科学 2022-05-06 Gaurav Kumar Nayak , Ruchit Rawal , Rohit Lal , Himanshu Patil , Anirban Chakraborty