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The generalization capability of deepfake detectors is critical for real-world use. Data augmentation via synthetic fake face generation effectively enhances generalization, yet current SoTA methods rely on fixed strategies-raising a key…

计算机视觉与模式识别 · 计算机科学 2025-11-11 Yuxuan Zhou , Tao Yu , Wen Huang , Yuheng Zhang , Tao Dai , Shu-Tao Xia

Object detection is fundamental to various real-world applications, such as security monitoring and surveillance video analysis. Despite their advancements, state-of-the-art object detectors are still vulnerable to adversarial patch…

计算机视觉与模式识别 · 计算机科学 2026-03-24 Jin Ma , Mohammed Aldeen , Christopher Salas , Feng Luo , Mashrur Chowdhury , Mert Pesé , Long Cheng

Offline reinforcement learning (RL) faces a critical challenge of overestimating the value of out-of-distribution (OOD) actions. Existing methods mitigate this issue by penalizing unseen samples, yet they fail to accurately identify OOD…

机器学习 · 计算机科学 2026-05-12 Qingjun Wang , Hongtu Zhou , Hang Yu , Junqiao Zhao , Yanping Zhao , Chen Ye , Ziqiao Wang , Guang Chen

This paper presents a secure reinforcement learning (RL) based control method for unknown linear time-invariant cyber-physical systems (CPSs) that are subjected to compositional attacks such as eavesdropping and covert attack. We consider…

系统与控制 · 电气工程与系统科学 2021-12-06 Sayak Mukherjee , Veronica Adetola

RNA inverse folding, designing sequences to form specific 3D structures, is critical for therapeutics, gene regulation, and synthetic biology. Current methods, focused on sequence recovery, struggle to address structural objectives like…

机器学习 · 计算机科学 2026-01-28 Qi Si , Xuyang Liu , Penglei Wang , Xin Guo , Yuan Qi , Yuan Cheng

Jailbreak attacks exploit specific prompts to bypass LLM safeguards, causing the LLM to generate harmful, inappropriate, and misaligned content. Current jailbreaking methods rely heavily on carefully designed system prompts and numerous…

密码学与安全 · 计算机科学 2025-02-11 Buyun Liang , Kwan Ho Ryan Chan , Darshan Thaker , Jinqi Luo , René Vidal

While traditional recommendation techniques have made significant strides in the past decades, they still suffer from limited generalization performance caused by factors like inadequate collaborative signals, weak latent representations,…

信息检索 · 计算机科学 2024-09-17 Jianghao Lin , Jiaqi Liu , Jiachen Zhu , Yunjia Xi , Chengkai Liu , Yangtian Zhang , Yong Yu , Weinan Zhang

Due to the advances in deep learning, visually-aware recommender systems (RS) have recently attracted increased research interest. Such systems combine collaborative signals with images, usually represented as feature vectors outputted by…

机器学习 · 计算机科学 2020-11-06 Rami Cohen , Oren Sar Shalom , Dietmar Jannach , Amihood Amir

AI-generated text (AIGT) detection evasion aims to reduce the detection probability of AIGT, helping to identify weaknesses in detectors and enhance their effectiveness and reliability in practical applications. Although existing evasion…

密码学与安全 · 计算机科学 2025-08-25 Yinghan Zhou , Juan Wen , Wanli Peng , Zhengxian Wu , Ziwei Zhang , Yiming Xue

Distributed Denial of Service (DDoS) is a common type of Cybercrime. It can strongly damage a company reputation and increase its costs. Attackers improve continuously their strategies. They doubled the amount of unleashed communication…

网络与互联网体系结构 · 计算机科学 2017-05-25 Michele Nogueira , Augusto Almeida Santos , José M. F. Moura

The distributed nature of local differential privacy (LDP) invites data poisoning attacks and poses unforeseen threats to the underlying LDP-supported applications. In this paper, we propose a comprehensive mitigation framework for popular…

密码学与安全 · 计算机科学 2025-06-18 Xiaolin Li , Ninghui Li , Boyang Wang , Wenhai Sun

This paper describes a simulation study on security attacks over Distributed Ledger Technologies (DLTs). We specifically focus on attacks at the underlying peer-to-peer layer of these systems, that is in charge of disseminating messages…

分布式、并行与集群计算 · 计算机科学 2020-07-31 Luca Serena , Gabriele D'Angelo , Stefano Ferretti

Distributed Denial of Service (DDoS) attacks have emerged as a popular means of causing mass targeted service disruptions, often for extended periods of time. The relative ease and low costs of launching such attacks, supplemented by the…

密码学与安全 · 计算机科学 2011-03-18 Jaydip Sen

Data assimilation (DA) improves prediction of chaotic systems by combining model forecasts with sparse, noisy observations. Many DA methods are inherently probabilistic, but accurate probabilistic DA is often computationally expensive…

流体动力学 · 物理学 2026-04-24 Aditya Sai Pranith Ayapilla , Kazuya Miyashita , Yuki Yasuda , Ryo Onishi

The rapid progress of Deepfake technology has made face swapping highly realistic, raising concerns about the malicious use of fabricated facial content. Existing methods often struggle to generalize to unseen domains due to the diverse…

计算机视觉与模式识别 · 计算机科学 2024-10-08 Ke Sun , Shen Chen , Taiping Yao , Hong Liu , Xiaoshuai Sun , Shouhong Ding , Rongrong Ji

Diffusion models are powerful generative models in continuous data domains such as image and video data. Discrete graph diffusion models (DGDMs) have recently extended them for graph generation, which are crucial in fields like molecule and…

密码学与安全 · 计算机科学 2025-03-11 Jiawen Wang , Samin Karim , Yuan Hong , Binghui Wang

Recommender system has attracted much attention during the past decade. Many attack detection algorithms have been developed for better recommendations, mostly focusing on shilling attacks, where an attack organizer produces a large number…

信息检索 · 计算机科学 2020-07-07 Ming Pang , Wei Gao , Min Tao , Zhi-Hua Zhou

Recent studies have shown that recommender systems (RSs) are highly vulnerable to data poisoning attacks. Understanding attack tactics helps improve the robustness of RSs. We intend to develop efficient attack methods that use limited…

密码学与安全 · 计算机科学 2024-02-15 Shiyi Yang , Lina Yao , Chen Wang , Xiwei Xu , Liming Zhu

Recent progress in generative AI, primarily through diffusion models, presents significant challenges for real-world deepfake detection. The increased realism in image details, diverse content, and widespread accessibility to the general…

计算机视觉与模式识别 · 计算机科学 2024-04-03 Chaitali Bhattacharyya , Hanxiao Wang , Feng Zhang , Sungho Kim , Xiatian Zhu

Diffusion Models (DMs), as a leading class of generative models, offer key advantages for reinforcement learning (RL), including multi-modal expressiveness, stable training, and trajectory-level planning. This survey delivers a…

机器学习 · 计算机科学 2025-10-15 Changfu Xu , Jianxiong Guo , Yuzhu Liang , Haiyang Huang , Haodong Zou , Xi Zheng , Shui Yu , Xiaowen Chu , Jiannong Cao , Tian Wang