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In this paper, we present a new class of Markov decision processes (MDPs), called Tsallis MDPs, with Tsallis entropy maximization, which generalizes existing maximum entropy reinforcement learning (RL). A Tsallis MDP provides a unified…

Machine Learning · Computer Science 2019-02-08 Kyungjae Lee , Sungyub Kim , Sungbin Lim , Sungjoon Choi , Songhwai Oh

Generating adversarial examples (AEs) can be formulated as an optimization problem. Among various optimization-based attacks, the gradient-based PGD and the momentum-based MI-FGSM have garnered considerable interest. However, all these…

Machine Learning · Computer Science 2025-12-17 Wei Tao , Sheng Long , Xin Liu , Wei Li , Qing Tao

Segmenting aerial images is being of great potential in surveillance and scene understanding of urban areas. It provides a mean for automatic reporting of the different events that happen in inhabited areas. This remarkably promotes public…

Computer Vision and Pattern Recognition · Computer Science 2019-06-10 Bilel Benjdira , Yakoub Bazi , Anis Koubaa , Kais Ouni

Domain adaptive semantic segmentation refers to making predictions on a certain target domain with only annotations of a specific source domain. Current state-of-the-art works suggest that performing category alignment can alleviate domain…

Computer Vision and Pattern Recognition · Computer Science 2021-05-12 Shuang Li , Binhui Xie , Bin Zang , Chi Harold Liu , Xinjing Cheng , Ruigang Yang , Guoren Wang

We propose a new generative adversarial architecture to mitigate imbalance data problem in medical image semantic segmentation where the majority of pixels belongs to a healthy region and few belong to lesion or non-health region. A model…

Computer Vision and Pattern Recognition · Computer Science 2018-10-10 Mina Rezaei , Haojin Yang , Christoph Meinel

Neural networks have been proven to be vulnerable to a variety of adversarial attacks. From a safety perspective, highly sparse adversarial attacks are particularly dangerous. On the other hand the pixelwise perturbations of sparse attacks…

Machine Learning · Computer Science 2019-09-12 Francesco Croce , Matthias Hein

Unsupervised domain adaptation is a promising technique for semantic segmentation and other computer vision tasks for which large-scale data annotation is costly and time-consuming. In semantic segmentation, it is attractive to train models…

Computer Vision and Pattern Recognition · Computer Science 2021-05-19 Luke Melas-Kyriazi , Arjun K. Manrai

Recent breakthroughs in semi-supervised semantic segmentation have been developed through contrastive learning. In prevalent pixel-wise contrastive learning solutions, the model maps pixels to deterministic representations and regularizes…

Computer Vision and Pattern Recognition · Computer Science 2022-12-19 Haoyu Xie , Changqi Wang , Mingkai Zheng , Minjing Dong , Shan You , Chong Fu , Chang Xu

Domain adaptive semantic segmentation aims to train a model performing satisfactory pixel-level predictions on the target with only out-of-domain (source) annotations. The conventional solution to this task is to minimize the discrepancy…

Computer Vision and Pattern Recognition · Computer Science 2020-11-03 Guoliang Kang , Yunchao Wei , Yi Yang , Yueting Zhuang , Alexander G. Hauptmann

Adversarial attacks against deep learning models represent a major threat to the security and reliability of natural language processing (NLP) systems. In this paper, we propose a modification to the BERT-Attack framework, integrating…

Machine Learning · Computer Science 2024-08-01 Hetvi Waghela , Jaydip Sen , Sneha Rakshit

CNNs are poised to become integral parts of many critical systems. Despite their robustness to natural variations, image pixel values can be manipulated, via small, carefully crafted, imperceptible perturbations, to cause a model to…

Computer Vision and Pattern Recognition · Computer Science 2018-04-03 Aaditya Prakash , Nick Moran , Solomon Garber , Antonella DiLillo , James Storer

Existing pixel-level adversarial attacks on neural networks may be deficient in real scenarios, since pixel-level changes on the data cannot be fully delivered to the neural network after camera capture and multiple image preprocessing…

Computer Vision and Pattern Recognition · Computer Science 2020-12-22 Chenchen Zhao , Hao Li

Vision-Language Models (VLMs), such as CLIP, have achieved impressive zero-shot recognition performance but remain highly susceptible to adversarial perturbations, posing significant risks in safety-critical scenarios. Previous…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Zhiwei Li , Yitian Pang , Weining Wang , Zhenan Sun , Qi Li

In social media, neural network models have been applied to hate speech detection, sentiment analysis, etc., but neural network models are susceptible to adversarial attacks. For instance, in a text classification task, the attacker…

Computation and Language · Computer Science 2024-12-04 Xi Cao , Nuo Qun , Quzong Gesang , Yulei Zhu , Trashi Nyima

State-of-the-art deep learning models for tabular data have recently achieved acceptable performance to be deployed in industrial settings. However, the robustness of these models remains scarcely explored. Contrary to computer vision,…

Machine Learning · Computer Science 2024-06-05 Thibault Simonetto , Salah Ghamizi , Maxime Cordy

Since the fully convolutional network has achieved great success in semantic segmentation, lots of works have been proposed focusing on extracting discriminative pixel feature representations. However, we observe that existing methods still…

Computer Vision and Pattern Recognition · Computer Science 2023-01-13 Dongyue Wu , Zilin Guo , Aoyan Li , Changqian Yu , Changxin Gao , Nong Sang

Compared with transferable untargeted attacks, transferable targeted adversarial attacks could specify the misclassification categories of adversarial samples, posing a greater threat to security-critical tasks. In the meanwhile, 3D…

Computer Vision and Pattern Recognition · Computer Science 2024-06-11 Yao Huang , Yinpeng Dong , Shouwei Ruan , Xiao Yang , Hang Su , Xingxing Wei

The vulnerability of deep neural networks to adversarial attacks has been widely demonstrated (e.g., adversarial example attacks). Traditional attacks perform unstructured pixel-wise perturbation to fool the classifier. An alternative…

Machine Learning · Computer Science 2022-05-23 Shuo Wang , Surya Nepal , Carsten Rudolph , Marthie Grobler , Shangyu Chen , Tianle Chen

Recent studies imply that deep neural networks are vulnerable to adversarial examples -- inputs with a slight but intentional perturbation are incorrectly classified by the network. Such vulnerability makes it risky for some…

Computer Vision and Pattern Recognition · Computer Science 2021-07-27 Jinyu Yang , Chunyuan Li , Weizhi An , Hehuan Ma , Yuzhi Guo , Yu Rong , Peilin Zhao , Junzhou Huang

Adversarial robustness has been studied extensively in image classification, especially for the $\ell_\infty$-threat model, but significantly less so for related tasks such as object detection and semantic segmentation, where attacks turn…

Computer Vision and Pattern Recognition · Computer Science 2024-07-17 Francesco Croce , Naman D Singh , Matthias Hein