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This study reveals a critical safety blind spot in modern LLMs: learning-style queries, which closely resemble ordinary educational questions, can reliably elicit harmful responses. The learning-style queries are constructed by a novel…

密码学与安全 · 计算机科学 2026-02-25 Xuan Luo , Yue Wang , Zefeng He , Geng Tu , Jing Li , Ruifeng Xu

Cost functions are commonly employed in Safe Deep Reinforcement Learning (DRL). However, the cost is typically encoded as an indicator function due to the difficulty of quantifying the risk of policy decisions in the state space. Such an…

人工智能 · 计算机科学 2023-02-21 Enrico Marchesini , Luca Marzari , Alessandro Farinelli , Christopher Amato

We propose an effective Hybrid Deep Learning (HDL) architecture for the task of determining the probability that a questioned handwritten word has been written by a known writer. HDL is an amalgamation of Auto-Learned Features (ALF) and…

计算机视觉与模式识别 · 计算机科学 2019-10-08 Mohammad Abuzar Shaikh , Mihir Chauhan , Jun Chu , Sargur Srihari

Survival analysis provides a well-established framework for modeling time-to-event data, with hazard and survival functions formally defined as population-level quantities. In applied work, however, these quantities are often interpreted as…

统计方法学 · 统计学 2026-03-26 Xijia Liu

Federated Learning (FL) is a promising technology that enables multiple actors to build a joint model without sharing their raw data. The distributed nature makes FL vulnerable to various poisoning attacks, including model poisoning attacks…

密码学与安全 · 计算机科学 2023-11-13 Yanli Li , Huaming Chen , Wei Bao , Zhengmeng Xu , Dong Yuan

Climate extremes present escalating risks to agriculture intensifying the need for reliable multi-hazard early warning systems (EWS). The situation is evolving due to climate change and hence such systems should have the intelligent to…

机器学习 · 计算机科学 2025-08-01 Boyuan Zheng , Victor W. Chu

A Deep Neural Network (DNN) based algorithm is proposed for the detection and classification of faults in industrial plants. The proposed algorithm has the ability to classify faults, especially incipient faults that are difficult to detect…

机器学习 · 计算机科学 2022-12-02 Piyush Agarwal , Jorge Ivan Mireles Gonzalez , Ali Elkamel , Hector Budman

Detecting rare events, those defined to give rise to high impact but have a low probability of occurring, is a challenge in a number of domains including meteorological, environmental, financial and economic. The use of machine learning to…

应用统计 · 统计学 2022-09-13 Santhosh Narayanan , Carsten Maple , Mark Hooper

Do all adversarial examples have the same consequences? An autonomous driving system misclassifying a pedestrian as a car may induce a far more dangerous -- and even potentially lethal -- behavior than, for instance, a car as a bus. In…

机器学习 · 计算机科学 2021-02-19 Avery Ma , Aladin Virmaux , Kevin Scaman , Juwei Lu

Multi-agent LLM systems decompose workflows across agents, tools, shared context, memory, and decision gates. This modularity improves interpretability, but creates a propagation risk: a bounded perturbation to one component can be reused…

密码学与安全 · 计算机科学 2026-05-28 Md Hafizur Rahman , Zafaryab Haider , Tanzim Mahfuz , Prabuddha Chakraborty

Reducing traffic accidents is an important public safety challenge, therefore, accident analysis and prediction has been a topic of much research over the past few decades. Using small-scale datasets with limited coverage, being dependent…

Abrasive flap wheels are common for finishing complex free-form surfaces due to their flexibility. However, this flexibility results in complex wear patterns such as concave/convex flap profiles or flap tears, which influence the grinding…

计算机视觉与模式识别 · 计算机科学 2026-03-16 Falko Kähler , Maxim Wille , Ole Schmedemann , Thorsten Schüppstuhl

Several technologies have been proposed for deflecting a hazardous Solar System object on a trajectory that would otherwise impact the Earth. The effectiveness of each technology depends on several characteristics of the given object,…

地球与行星天体物理 · 物理学 2018-04-04 Erika R. Nesvold , Adam Greenberg , Nicolas Erasmus , Elmarie van Heerden , J. L. Galache , Eric Dahlstrom , Franck Marchis

Multivariate Hawkes Processes (MHPs) are a class of point processes that can account for complex temporal dynamics among event sequences. In this work, we study the accuracy and computational efficiency of three classes of algorithms which,…

统计计算 · 统计学 2025-02-24 Alex Ziyu Jiang , Abel Rodríguez

Recent transfer learning (TL) approaches in industrial intelligent fault diagnosis (FD) mostly follow the "pre-train and fine-tuning" paradigm to address data drift, which emerges from variable working conditions. However, we find that this…

机器学习 · 计算机科学 2023-10-10 Chen Jiao , Mao Fengjian , Lv Zuohong , Tang Jianhua

This paper develops a continuous-time filtering framework for estimating a hazard rate subject to an unobservable change-point. This framework naturally arises in both financial and insurance applications, where the default intensity of a…

数理金融 · 定量金融 2026-01-12 Matteo Buttarazzi , Claudia Ceci

Current Hierarchical Reinforcement Learning (HRL) algorithms excel in long-horizon sequential decision-making tasks but still face two challenges: delay effects and spurious correlations. To address them, we propose a causal HRL approach…

机器学习 · 计算机科学 2025-05-06 Chenran Zhao , Dianxi Shi , Mengzhu Wang , Jianqiang Xia , Huanhuan Yang , Songchang Jin , Shaowu Yang , Chunping Qiu

Dynamic Facial Expression Recognition (DFER) plays a critical role in affective computing and human-computer interaction. Although existing methods achieve comparable performance, they inevitably suffer from performance degradation under…

计算机视觉与模式识别 · 计算机科学 2025-07-29 Feng-Qi Cui , Anyang Tong , Jinyang Huang , Jie Zhang , Dan Guo , Zhi Liu , Meng Wang

Safety is one of the most important development goals for highly automated driving (HAD) systems. This applies in particular to the perception function driven by Deep Neural Networks (DNNs). For these, large parts of the traditional safety…

计算机视觉与模式识别 · 计算机科学 2020-02-21 Timo Sämann , Peter Schlicht , Fabian Hüger

In connected and autonomous vehicles, machine learning for safety message classification has become critical for detecting malicious or anomalous behavior. However, conventional approaches that rely on centralized data collection or purely…

网络与互联网体系结构 · 计算机科学 2025-05-30 Utku Demir , Yalin E. Sagduyu , Tugba Erpek , Hossein Jafari , Sastry Kompella , Mengran Xue