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Zero-shot anomaly detection (ZSAD) recognizes and localizes anomalies in previously unseen objects by establishing feature mapping between textual prompts and inspection images, demonstrating excellent research value in flexible industrial…

Computer Vision and Pattern Recognition · Computer Science 2026-04-02 Huilin Deng , Hongchen Luo , Wei Zhai , Yang Cao , Yu Kang

Video anomaly detection (VAD) aims to temporally locate abnormal events in a video. Existing works mostly rely on training deep models to learn the distribution of normality with either video-level supervision, one-class supervision, or in…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Luca Zanella , Willi Menapace , Massimiliano Mancini , Yiming Wang , Elisa Ricci

Software systems often record important runtime information in logs to help with troubleshooting. Log-based anomaly detection has become a key research area that aims to identify system issues through log data, ultimately enhancing the…

Software Engineering · Computer Science 2025-04-15 Wei Guan , Jian Cao , Shiyou Qian , Jianqi Gao , Chun Ouyang

Industrial anomaly detection (IAD) plays a crucial role in the maintenance and quality control of manufacturing processes. In this paper, we propose a novel approach, Vision-Language Anomaly Detection via Contrastive Cross-Modal Training…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Kun Qian , Tianyu Sun , Wenhong Wang

Time series data plays a critical role across diverse domains such as healthcare, energy, and finance, where tasks like classification, anomaly detection, and forecasting are essential for informed decision-making. Recently, large language…

Machine Learning · Computer Science 2024-12-18 Francis Tang , Ying Ding

Recent studies have shown the ability of large language models to perform a variety of tasks, including time series forecasting. The flexible nature of these models allows them to be used for many applications. In this paper, we present a…

Machine Learning · Computer Science 2024-11-04 Sarah Alnegheimish , Linh Nguyen , Laure Berti-Equille , Kalyan Veeramachaneni

LLM-driven Anomaly Detection (AD) helps enhance the understanding and explanatory abilities of anomalous behaviors in Time Series (TS). Existing methods face challenges of inadequate reasoning ability, deficient multi-turn dialogue…

Artificial Intelligence · Computer Science 2026-01-21 Hui Sun , Chang Xu , Haonan Xie , Hao Li , Yuhao Huang , Chuheng Zhang , Ming Jin , Xiaoguang Liu , Gang Wang , Jiang Bian

Time series data is fundamental to decision-making across many domains including healthcare, finance, power systems, and logistics. However, analyzing this data correctly often requires incorporating unstructured contextual information,…

Machine Learning · Computer Science 2026-03-17 Felix Parker , Nimeesha Chan , Chi Zhang , Kimia Ghobadi

Time-series anomaly detection (TSAD) with multimodal large language models (MLLMs) is an emerging area, yet a persistent challenge remains: MLLMs rely on coarse time-series heuristics but struggle with multi-dimensional, detailed reasoning,…

Machine Learning · Computer Science 2026-02-10 Junru Zhang , Lang Feng , Haoran Shi , Xu Guo , Han Yu , Yabo Dong , Duanqing Xu

This paper presents LogiCode, a novel framework that leverages Large Language Models (LLMs) for identifying logical anomalies in industrial settings, moving beyond traditional focus on structural inconsistencies. By harnessing LLMs for…

Machine Learning · Computer Science 2024-06-10 Yiheng Zhang , Yunkang Cao , Xiaohao Xu , Weiming Shen

In anomaly detection, methods based on large language models (LLMs) can incorporate expert knowledge by reading professional document, while task-specific small models excel at extracting normal data patterns and detecting value…

Artificial Intelligence · Computer Science 2026-03-31 Feiyi Chen , Leilei Zhang , Guansong Pang , Roger Zimmermann , Shuiguang Deng

Large language models (LLMs) are effective at capturing complex, valuable conceptual representations from textual data for a wide range of real-world applications. However, in fields like Intelligent Fault Diagnosis (IFD), incorporating…

Artificial Intelligence · Computer Science 2024-12-03 Hamzah A. A. M. Qaid , Bo Zhang , Dan Li , See-Kiong Ng , Wei Li

Anomaly detection on text-rich graphs is widely prevalent in real life, such as detecting incorrectly assigned academic papers to authors and detecting bots in social networks. The remarkable capabilities of large language models (LLMs)…

Computation and Language · Computer Science 2025-08-08 Yunhe Pang , Bo Chen , Fanjin Zhang , Yanghui Rao , Evgeny Kharlamov , Jie Tang

Existing semi-supervised video anomaly detection (VAD) methods often struggle with detecting complex anomalies involving object interactions and generally lack explainability. To overcome these limitations, we propose a novel VAD framework…

Computer Vision and Pattern Recognition · Computer Science 2026-03-02 Furkan Mumcu , Michael J. Jones , Anoop Cherian , Yasin Yilmaz

We propose a novel inference-time out-of-domain (OOD) detection algorithm for specialized large language models (LLMs). Despite achieving state-of-the-art performance on in-domain tasks through fine-tuning, specialized LLMs remain…

Computation and Language · Computer Science 2025-09-17 Ayush Gupta , Ramneet Kaur , Anirban Roy , Adam D. Cobb , Rama Chellappa , Susmit Jha

Logical image understanding involves interpreting and reasoning about the relationships and consistency within an image's visual content. This capability is essential in applications such as industrial inspection, where logical anomaly…

Computer Vision and Pattern Recognition · Computer Science 2025-01-09 Er Jin , Qihui Feng , Yongli Mou , Stefan Decker , Gerhard Lakemeyer , Oliver Simons , Johannes Stegmaier

Large Language Models (LLMs) have seen significant use in domains such as natural language processing and computer vision. Going beyond text, image and graphics, LLMs present a significant potential for analysis of time series data,…

Machine Learning · Computer Science 2024-05-08 Xiyuan Zhang , Ranak Roy Chowdhury , Rajesh K. Gupta , Jingbo Shang

Large language models (LLMs) have gained increasing attention in power grids for their general-purpose capabilities. Meanwhile, anomaly detection (AD) remains critical for grid resilience, requiring accurate and interpretable decisions…

Systems and Control · Electrical Eng. & Systems 2025-12-09 Yichen Liu , Hongyu Wu , Bo Liu

An emerging topic in large language models (LLMs) is their application to time series forecasting, characterizing mainstream and patternable characteristics of time series. A relevant but rarely explored and more challenging question is…

Machine Learning · Computer Science 2024-08-08 Manqing Dong , Hao Huang , Longbing Cao

As robots acquire increasingly sophisticated skills and see increasingly complex and varied environments, the threat of an edge case or anomalous failure is ever present. For example, Tesla cars have seen interesting failure modes ranging…

Robotics · Computer Science 2023-09-13 Amine Elhafsi , Rohan Sinha , Christopher Agia , Edward Schmerling , Issa Nesnas , Marco Pavone