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Minimizing computational overhead in time-series classification, particularly in deep learning models, presents a significant challenge due to the high complexity of model architectures and the large volume of sequential data that must be…

密码学与安全 · 计算机科学 2025-08-28 Cagla Ipek Kocal , Onat Gungor , Tajana Rosing , Baris Aksanli

We study offline meta-reinforcement learning, a practical reinforcement learning paradigm that learns from offline data to adapt to new tasks. The distribution of offline data is determined jointly by the behavior policy and the task.…

机器学习 · 计算机科学 2022-06-22 Haoqi Yuan , Zongqing Lu

Ransomware has become a critical threat to cybersecurity due to its rapid evolution, the necessity for early detection, and growing diversity, posing significant challenges to traditional detection methods. While AI-based approaches had…

密码学与安全 · 计算机科学 2025-10-28 Zhixin Pan , Ziyu Shu , Amberbir Alemayoh

In this research, we use user defined labels from three internet text sources (Reddit, Stackexchange, Arxiv) to train 21 different machine learning models for the topic classification task of detecting cybersecurity discussions in natural…

信息检索 · 计算机科学 2024-02-28 Elijah Pelofske , Lorie M. Liebrock , Vincent Urias

This work evaluates the performance of Cyber Threat Intelligence (CTI) extraction methods in identifying attack techniques from threat reports available on the web using the MITRE ATT&CK framework. We analyse four configurations utilising…

密码学与安全 · 计算机科学 2025-05-07 Hoang Cuong Nguyen , Shahroz Tariq , Mohan Baruwal Chhetri , Bao Quoc Vo

Sequential Recommenders, which exploit dynamic user intents through interaction sequences, is vulnerable to adversarial attacks. While existing attacks primarily rely on data poisoning, they require large-scale user access or fake profiles…

机器学习 · 计算机科学 2025-12-23 Jiajie Su , Zihan Nan , Yunshan Ma , Xiaobo Xia , Xiaohua Feng , Weiming Liu , Xiang Chen , Xiaolin Zheng , Chaochao Chen

Deep learning models achieve state-of-the-art performance across domains but face scalability challenges in real-time or resource-constrained scenarios. To address this, we propose Loss Trajectory Correlation (LTC), a novel metric for…

机器学习 · 计算机科学 2025-03-14 Manish Nagaraj , Deepak Ravikumar , Efstathia Soufleri , Kaushik Roy

With the widespread accumulation of observational data, researchers obtain a new direction to learn counterfactual effects in many domains (e.g., health care and computational advertising) without Randomized Controlled Trials(RCTs).…

机器学习 · 计算机科学 2021-11-01 Guanglin Zhou , Lina Yao , Xiwei Xu , Chen Wang , Liming Zhu

Real-world offline datasets are often subject to data corruptions (such as noise or adversarial attacks) due to sensor failures or malicious attacks. Despite advances in robust offline reinforcement learning (RL), existing methods struggle…

机器学习 · 计算机科学 2024-11-04 Rui Yang , Jie Wang , Guoping Wu , Bin Li

Monitoring the threat landscape to be aware of actual or potential attacks is of utmost importance to cybersecurity professionals. Information about cyber threats is typically distributed using natural language reports. Natural language…

Predicting and reasoning about the future lie at the heart of many time-series questions. For example, goal-conditioned reinforcement learning can be viewed as learning representations to predict which states are likely to be visited in the…

机器学习 · 计算机科学 2025-10-10 Chongyi Zheng , Ruslan Salakhutdinov , Benjamin Eysenbach

Adversarial attacks are an important security concern for computer vision (CV). As CV models are becoming increasingly valuable assets in applied practice, disrupting them is emerging as a form of economic sabotage. This paper opens up the…

计算机视觉与模式识别 · 计算机科学 2024-06-12 Jan Zahálka

Vertical Federated Learning (VFL) has revolutionised collaborative machine learning by enabling privacy-preserving model training across multiple parties. However, it remains vulnerable to information leakage during intermediate computation…

机器学习 · 计算机科学 2025-05-19 Achmad Ginanjar , Xue Li , Priyanka Singh , Wen Hua

Constrained Reinforcement Learning (CRL) aims to optimize decision-making policies under constraint conditions, making it highly applicable to safety-critical domains such as autonomous driving, robotics, and power grid management. However,…

机器学习 · 计算机科学 2026-02-16 Wentao Xu , Zhongming Yao , Weihao Li , Zhenghang Song , Yumeng Song , Tianyi Li , Yushuai Li

Code representation learning, which aims to encode the semantics of source code into distributed vectors, plays an important role in recent deep-learning-based models for code intelligence. Recently, many pre-trained language models for…

计算与语言 · 计算机科学 2021-09-10 Xin Wang , Yasheng Wang , Fei Mi , Pingyi Zhou , Yao Wan , Xiao Liu , Li Li , Hao Wu , Jin Liu , Xin Jiang

Aligned large language models (LLMs) demonstrate exceptional capabilities in task-solving, following instructions, and ensuring safety. However, the continual learning aspect of these aligned LLMs has been largely overlooked. Existing…

Machine learning for malware classification shows encouraging results, but real deployments suffer from performance degradation as malware authors adapt their techniques to evade detection. This phenomenon, known as concept drift, occurs as…

密码学与安全 · 计算机科学 2024-01-09 Federico Barbero , Feargus Pendlebury , Fabio Pierazzi , Lorenzo Cavallaro

Neural networks have revolutionized various domains, exhibiting remarkable accuracy in tasks like natural language processing and computer vision. However, their vulnerability to slight alterations in input samples poses challenges,…

计算机视觉与模式识别 · 计算机科学 2023-11-15 Shashank Kotyan , Danilo Vasconcellos Vargas

Discriminative representation is crucial for the association step in multi-object tracking. Recent work mainly utilizes features in single or neighboring frames for constructing metric loss and empowering networks to extract representation…

计算机视觉与模式识别 · 计算机科学 2022-04-06 En Yu , Zhuoling Li , Shoudong Han

Survival analysis is essential for clinical decision-making, as it allows practitioners to estimate time-to-event outcomes, stratify patient risk profiles, and guide treatment planning. Deep learning has revolutionized this field with…

机器学习 · 计算机科学 2026-02-03 Pinar Erbil , Alberto Archetti , Eugenio Lomurno , Matteo Matteucci