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The detection of anomalies is essential mining task for the security and reliability in computer systems. Logs are a common and major data source for anomaly detection methods in almost every computer system. They collect a range of…

Machine Learning · Computer Science 2020-08-24 Sasho Nedelkoski , Jasmin Bogatinovski , Alexander Acker , Jorge Cardoso , Odej Kao

Sound event detection (SED) is typically posed as a supervised learning problem requiring training data with strong temporal labels of sound events. However, the production of datasets with strong labels normally requires unaffordable labor…

Sound · Computer Science 2018-11-02 Dezhi Wang , Lilun Zhang , Changchun Bao , Kele Xu , Boqing Zhu , Qiuqiang Kong

Anomaly detection (AD) plays a pivotal role in numerous web-based applications, including malware detection, anti-money laundering, device failure detection, and network fault analysis. Most methods, which rely on unsupervised learning, are…

Machine Learning · Computer Science 2024-02-07 Haihong Zhao , Chenyi Zi , Yang Liu , Chen Zhang , Yan Zhou , Jia Li

Log analysis is an important technique that engineers use for troubleshooting faults of large-scale service-oriented systems. In this study, we propose a novel semi-supervised log-based anomaly detection approach, LogDP, which utilizes the…

Software Engineering · Computer Science 2021-10-06 Yongzheng Xie , Hongyu Zhang , Bo Zhang , Muhammad Ali Babar , Sha Lu

Annotating time boundaries of sound events is labor-intensive, limiting the scalability of strongly supervised learning in audio detection. To reduce annotation costs, weakly-supervised learning with only clip-level labels has been widely…

Sound · Computer Science 2025-10-30 Keisuke Imoto

Log anomaly detection is a critical task for system operations and security assurance. However, in networked systems at scale, log data are generated at massive scale while instance-level annotations are prohibitively expensive, posing…

Machine Learning · Computer Science 2026-05-13 Yutszyuk Wong , Wentai Wu , Yuen-Ying Yeung , Weiwei Lin

With a focus on abnormal events contained within untrimmed videos, there is increasing interest among researchers in video anomaly detection. Among different video anomaly detection scenarios, weakly-supervised video anomaly detection poses…

Computer Vision and Pattern Recognition · Computer Science 2023-09-29 Yidan Fan , Yongxin Yu , Wenhuan Lu , Yahong Han

Automatic log analysis is essential for the efficient Operation and Maintenance (O&M) of software systems, providing critical insights into system behaviors. However, existing approaches mostly treat log analysis as training a model to…

Software Engineering · Computer Science 2025-01-10 Yilun Liu , Yuhe Ji , Shimin Tao , Minggui He , Weibin Meng , Shenglin Zhang , Yongqian Sun , Yuming Xie , Boxing Chen , Hao Yang

Log-based anomaly detection is a essential task for ensuring the reliability and performance of software systems. However, the performance of existing anomaly detection methods heavily relies on labeling, while labeling a large volume of…

Machine Learning · Computer Science 2025-10-10 Chiming Duan , Minghua He , Pei Xiao , Tong Jia , Xin Zhang , Zhewei Zhong , Xiang Luo , Yan Niu , Lingzhe Zhang , Yifan Wu , Siyu Yu , Weijie Hong , Ying Li , Gang Huang

Weakly supervised video anomaly detection aims to identify abnormal events in videos using only video-level labels. Recently, two-stage self-training methods have achieved significant improvements by self-generating pseudo labels and…

Computer Vision and Pattern Recognition · Computer Science 2022-12-09 Chen Zhang , Guorong Li , Yuankai Qi , Shuhui Wang , Laiyun Qing , Qingming Huang , Ming-Hsuan Yang

Supervised learning usually requires a large amount of labelled data. However, attaining ground-truth labels is costly for many tasks. Alternatively, weakly supervised methods learn with cheap weak signals that only approximately label some…

Machine Learning · Computer Science 2024-11-26 You Lu , Wenzhuo Song , Chidubem Arachie , Bert Huang

Acoustic event detection is essential for content analysis and description of multimedia recordings. The majority of current literature on the topic learns the detectors through fully-supervised techniques employing strongly labeled data.…

Sound · Computer Science 2016-07-07 Anurag Kumar , Bhiksha Raj

The performance of object detection, to a great extent, depends on the availability of large annotated datasets. To alleviate the annotation cost, the research community has explored a number of ways to exploit unlabeled or weakly labeled…

Computer Vision and Pattern Recognition · Computer Science 2021-05-25 Shijie Fang , Yuhang Cao , Xinjiang Wang , Kai Chen , Dahua Lin , Wayne Zhang

Given a text description, Temporal Language Grounding (TLG) aims to localize temporal boundaries of the segments that contain the specified semantics in an untrimmed video. TLG is inherently a challenging task, as it requires comprehensive…

Computer Vision and Pattern Recognition · Computer Science 2021-12-07 Fan Luo , Shaoxiang Chen , Jingjing Chen , Zuxuan Wu , Yu-Gang Jiang

Logs are widely used in the development and maintenance of software systems. Logs can help engineers understand the runtime behavior of systems and diagnose system failures. For anomaly diagnosis, existing methods generally use log event…

Software Engineering · Computer Science 2024-02-20 Haitian Yang , Degang Sun , Wen Liu , Yanshu Li , Yan Wang , Weiqing Huang

Recent advances in semi-supervised learning (SSL) demonstrate that a combination of consistency regularization and pseudo-labeling can effectively improve image classification accuracy in the low-data regime. Compared to classification,…

Computer Vision and Pattern Recognition · Computer Science 2021-03-31 Yuliang Zou , Zizhao Zhang , Han Zhang , Chun-Liang Li , Xiao Bian , Jia-Bin Huang , Tomas Pfister

As the IT industry advances, system log data becomes increasingly crucial. Many computer systems rely on log texts for management due to restricted access to source code. The need for log anomaly detection is growing, especially in…

Machine Learning · Computer Science 2023-11-10 Gunho No , Yukyung Lee , Hyeongwon Kang , Pilsung Kang

Logs play a crucial role in system monitoring and debugging by recording valuable system information, including events and states. Although various methods have been proposed to detect anomalies in log sequences, they often overlook the…

Machine Learning · Computer Science 2023-09-13 Yufei Li , Yanchi Liu , Haoyu Wang , Zhengzhang Chen , Wei Cheng , Yuncong Chen , Wenchao Yu , Haifeng Chen , Cong Liu

When labeled data is insufficient, semi-supervised learning with the pseudo-labeling technique can significantly improve the performance of automatic speech recognition. However, pseudo-labels are often noisy, containing numerous incorrect…

Audio and Speech Processing · Electrical Eng. & Systems 2023-08-15 Han Zhu , Dongji Gao , Gaofeng Cheng , Daniel Povey , Pengyuan Zhang , Yonghong Yan

In this paper we propose a novel learning framework called Supervised and Weakly Supervised Learning where the goal is to learn simultaneously from weakly and strongly labeled data. Strongly labeled data can be simply understood as fully…

Machine Learning · Computer Science 2017-02-21 Anurag Kumar , Bhiksha Raj