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Event detection has been one of the most important research topics in social media analysis. Most of the traditional approaches detect events based on fixed temporal and spatial resolutions, while in reality events of different scales…

社会与信息网络 · 计算机科学 2015-08-31 Xiaowen Dong , Dimitrios Mavroeidis , Francesco Calabrese , Pascal Frossard

Crime solving is a domain where solution discovery is often serendipitous. Unstructured mechanisms, like Reddit, for crime solving through crowds have failed so far. Mechanisms, collaborations, workflows, and micro-tasks necessary for…

人机交互 · 计算机科学 2015-11-25 Nitesh Goyal

Process discovery algorithms traditionally linearize events, failing to capture the inherent concurrency of real-world processes. While some techniques can handle partially ordered data, they often struggle with scalability on large event…

数据库 · 计算机科学 2026-04-21 Humam Kourani , Gyunam Park , Wil M. P. van der Aalst

Although Large Language Models have demonstrated powerful capabilities in a wide range of tasks such as language understanding and code generation, the frequent occurrence of hallucinations during the generation process has become a…

计算与语言 · 计算机科学 2025-10-09 JinXin Li , Gang Tu , JunJie Hu

Event Detection, which aims to identify and classify mentions of event instances from unstructured articles, is an important task in Natural Language Processing (NLP). Existing techniques for event detection only use homogeneous one-hot…

计算与语言 · 计算机科学 2022-11-03 Anran Hao , Siu Cheung Hui , Jian Su

Credit cards play an exploding role in modern economies. Its popularity and ubiquity have created a fertile ground for fraud, assisted by the cross boarder reach and instantaneous confirmation. While transactions are growing, the fraud…

密码学与安全 · 计算机科学 2022-08-24 Gayan K. Kulatilleke

The advent of the Edge Computing (EC) leads to a huge ecosystem where numerous nodes can interact with data collection devices located close to end users. Human detection and tracking can be realized at edge nodes that perform the…

计算机视觉与模式识别 · 计算机科学 2023-03-21 Fesatidis Georgios , Bratsos Dimitrios , Kostas Kolomvatsos

Distributed optimization is fundamental to modern machine learning applications like federated learning, but existing methods often struggle with ill-conditioned problems and face stability-versus-speed tradeoffs. We introduce fractional…

机器学习 · 计算机科学 2024-12-04 Andrei Lixandru , Marcel van Gerven , Sergio Pequito

Detecting suspicious activities in surveillance videos is a longstanding problem in real-time surveillance that leads to difficulties in detecting crimes. Hence, we propose a novel approach for detecting and summarizing suspicious…

计算机视觉与模式识别 · 计算机科学 2022-10-25 Ansh Mittal , Shuvam Ghosal , Rishibha Bansal

Cybersecurity attacks are growing both in frequency and sophistication over the years. This increasing sophistication and complexity call for more advancement and continuous innovation in defensive strategies. Traditional methods of…

机器学习 · 计算机科学 2020-01-20 Antoine Delplace , Sheryl Hermoso , Kristofer Anandita

Crowding at the entrances of large events may lead to critical and life-threatening situations, particularly when people start pushing each other to reach the event faster. Automatic and timely identification of pushing behavior would help…

机器学习 · 计算机科学 2023-06-13 Ahmed Alia , Mohammed Maree , Mohcine Chraibi , Anas Toma , Armin Seyfried

Social media platforms are plagued by harmful content such as hate speech, misinformation, and extremist rhetoric. Machine learning (ML) models are widely adopted to detect such content; however, they remain highly vulnerable to adversarial…

机器学习 · 计算机科学 2025-12-30 Yidong Chai , Yi Liu , Mohammadreza Ebrahimi , Weifeng Li , Balaji Padmanabhan

Neural models enjoy widespread use across a variety of tasks and have grown to become crucial components of many industrial systems. Despite their effectiveness and extensive popularity, they are not without their exploitable flaws.…

声音 · 计算机科学 2019-02-26 Krishan Rajaratnam , Jugal Kalita

Fraud detection systems (FDS) mainly perform two tasks: (i) real-time detection while the payment is being processed and (ii) posterior detection to block the card retrospectively and avoid further frauds. Since human verification is often…

机器学习 · 计算机科学 2022-04-12 Van Bach Nguyen , Kanishka Ghosh Dastidar , Michael Granitzer , Wissam Siblini

The unmoderated nature of social media enables the diffusion of hoaxes, which in turn jeopardises the credibility of information gathered from social media platforms. Existing research on automated detection of hoaxes has the limitation of…

计算与语言 · 计算机科学 2020-06-16 Arkaitz Zubiaga , Aiqi Jiang

Use of social network is the basic functionality of today's life. With the advent of more and more online social media, the information available and its utilization have come under the threat of several anomalies. Anomalies are the major…

网络与互联网体系结构 · 计算机科学 2018-04-20 Vishal Sharma , Ravinder Kumar , Wen-Huang Cheng , Mohammed Atiquzzaman , Kathiravan Srinivasan , Albert Y. Zomaya

Technology evolves quickly. Low-cost and ready-to-connect devices are designed to provide new services and applications. Smart grids or smart healthcare systems are some examples of these applications, all of which are in the context of…

密码学与安全 · 计算机科学 2021-12-07 Roberto Magán-Carrión , José Camacho , Gabriel Maciá-Fernández , Ángel Ruíz-Zafra

Real-time video surveillance has become a crucial technology for smart cities, made possible through the large-scale deployment of mobile and fixed video cameras. In this paper, we propose situation-aware streaming, for real-time…

网络与互联网体系结构 · 计算机科学 2022-04-06 Suvadip Batabyal , Ozgur Ercetin

Twitter is recognized as a crucial platform for the dissemination and gathering of Cyber Threat Intelligence (CTI). Its capability to provide real-time, actionable intelligence makes it an indispensable tool for detecting security events,…

密码学与安全 · 计算机科学 2024-09-13 Jian Cui , Hanna Kim , Eugene Jang , Dayeon Yim , Kicheol Kim , Yongjae Lee , Jin-Woo Chung , Seungwon Shin , Xiaojing Liao

Fake information poses one of the major threats for society in the 21st century. Identifying misinformation has become a key challenge due to the amount of fake news that is published daily. Yet, no approach is established that addresses…

信息检索 · 计算机科学 2021-03-30 Vishwani Gupta , Katharina Beckh , Sven Giesselbach , Dennis Wegener , Tim Wirtz