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Detecting anomalies in general ledger data is of utmost importance to ensure trustworthiness of financial records. Financial audits increasingly rely on machine learning (ML) algorithms to identify irregular or potentially fraudulent…

Machine Learning · Computer Science 2025-09-30 Alexander Bakumenko , Kateřina Hlaváčková-Schindler , Claudia Plant , Nina C. Hubig

Embedding models have demonstrated strong performance in tasks like clustering, retrieval, and feature extraction while offering computational advantages over generative models and cross-encoders. Benchmarks such as MTEB have shown that…

Software Engineering · Computer Science 2025-08-28 Zhuohao Li , Wenqing Chen , Jianxing Yu , Zhichao Lu

Log-based anomaly detection is critical for ensuring the stability and reliability of web systems. One of the key problems in this task is the lack of sufficient labeled logs, which limits the rapid deployment in new systems. Existing works…

Machine Learning · Computer Science 2026-03-27 Xinlong Zhao , Tong Jia , Minghua He , Xixuan Yang , Ying Li

In this paper, we introduce Anomaly Contribution Explainer or ACE, a tool to explain security anomaly detection models in terms of the model features through a regression framework, and its variant, ACE-KL, which highlights the important…

Machine Learning · Computer Science 2020-03-03 Xiao Zhang , Manish Marwah , I-ta Lee , Martin Arlitt , Dan Goldwasser

Long event sequences (termed traces) and large data logs that originate from sensors and prediction models are becoming increasingly common in our data-rich world. In such scenarios, conformance checking-validating a data log against an…

Databases · Computer Science 2025-05-29 Eli Bogdanov , Izack Cohen , Avigdor Gal

Event logs are widely used to record the status of high-tech systems, making log anomaly detection important for monitoring those systems. Most existing log anomaly detection methods take a log event count matrix or log event sequences as…

Software Engineering · Computer Science 2024-01-25 Zhong Li , Jiayang Shi , Matthijs van Leeuwen

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…

Machine Learning · Computer Science 2022-12-02 Piyush Agarwal , Jorge Ivan Mireles Gonzalez , Ali Elkamel , Hector Budman

Most existing random walk based network embedding methods often follow only one of two principles, homophily or structural equivalence. In real world networks, however, nodes exhibit a mixture of homophily and structural equivalence, which…

Social and Information Networks · Computer Science 2020-10-27 Chen Cui , Ning Yang , Philip S. Yu

Log-based anomaly detection is crucial for ensuring software system stability. However, the scarcity of labeled logs limits rapid deployment to new systems. Cross-system transfer has become an important research direction. State-of-the-art…

Software Engineering · Computer Science 2025-11-11 Xinlong Zhao , Tong Jia , Minghua He , Ying Li

In data systems, activities or events are continuously collected in the field to trace their proper executions. Logging, which means recording sequences of events, can be used for analyzing system failures and malfunctions, and identifying…

Machine Learning · Computer Science 2021-06-29 Tomer Meirman , Roni Stern , Gilad Katz

Unsupervised industrial anomaly detection requires accurately identifying defects without labeled data. Traditional autoencoder-based methods often struggle with incomplete anomaly suppression and loss of fine details, as their single-pass…

Computer Vision and Pattern Recognition · Computer Science 2025-12-15 Rongcheng Wu , Hao Zhu , Shiying Zhang , Mingzhe Wang , Zhidong Li , Hui Li , Jianlong Zhou , Jiangtao Cui , Fang Chen , Pingyang Sun , Qiyu Liao , Ye Lin

With their widespread popularity, web services have become the main targets of various cyberattacks. Existing traffic anomaly detection approaches focus on flow-level attacks, yet fail to recognize behavior-level attacks, which appear…

Cryptography and Security · Computer Science 2025-11-10 Zhibo Dong , Yong Huang , Shubao Sun , Wentao Cui , Zhihua Wang

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

Detecting the anomalies of web applications, important infrastructures for running modern companies and governments, is crucial for providing reliable web services. Many modern web applications operate on web APIs (e.g., RESTful, SOAP, and…

Software Engineering · Computer Science 2025-12-09 Wenjie Zhang , Yun Lin , Chun Fung Amos Kwok , Xiwen Teoh , Xiaofei Xie , Frank Liauw , Hongyu Zhang , Jin Song Dong

As modern software systems continue to grow in terms of complexity and volume, anomaly detection on multivariate monitoring metrics, which profile systems' health status, becomes more and more critical and challenging. In particular, the…

Software Engineering · Computer Science 2023-08-22 Jinyang Liu , Tianyi Yang , Zhuangbin Chen , Yuxin Su , Cong Feng , Zengyin Yang , Michael R. Lyu

The customization of large language models (LLMs) for user-specified tasks gets important. However, maintaining all the customized LLMs on cloud servers incurs substantial memory and computational overheads, and uploading user data can also…

Computation and Language · Computer Science 2024-06-12 Jihwan Bang , Juntae Lee , Kyuhong Shim , Seunghan Yang , Simyung Chang

The rapidly evolving cloud platforms and the escalating complexity of network traffic demand proper network traffic monitoring and anomaly detection to ensure network security and performance. This paper introduces a large language model…

Networking and Internet Architecture · Computer Science 2025-04-28 Ze Yang , Yihong Jin , Juntian Liu , Xinhe Xu , Yihan Zhang , Shuyang Ji

Deep learning has recently demonstrated state-of-the art performance on key tasks related to the maintenance of computer systems, such as intrusion detection, denial of service attack detection, hardware and software system failures, and…

Machine Learning · Computer Science 2018-03-15 Andy Brown , Aaron Tuor , Brian Hutchinson , Nicole Nichols

Topology optimization is a computational method used to determine the optimal material distribution within a prescribed design domain, aiming to minimize structural weight while satisfying load and boundary conditions. For critical…

Hardware Architecture · Computer Science 2026-04-17 Kaustubh Mhatre , Vedant Tewari , Aditya Ray , Farhan Khan , Ridwan Olabiyi , Ashif Iquebal , Aman Arora

Post-training via Supervised Fine-Tuning (SFT) and Reinforcement Learning (RL) is crucial for enhancing reasoning in Multimodal Large Language Models (MLLMs), yet existing paradigms often reach a performance bottleneck due to the…

Computer Vision and Pattern Recognition · Computer Science 2026-05-26 Zehao Wang , Yihan Zeng , Zidong Gong , Yuanfan Guo , Feng Zhu , Hongzhi Zhang , Wei Zhang , Wangmeng Zuo
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