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Automated log analysis is crucial to ensure high availability and reliability of complex systems. The advent of LLMs in NLP has ushered in a new era of language model-driven automated log analysis, garnering significant interest. Within…

Software Engineering · Computer Science 2025-01-22 Lipeng Ma , Weidong Yang , Yixuan Li , Ben Fei , Mingjie Zhou , Shuhao Li , Sihang Jiang , Bo Xu , Yanghua Xiao

Pretrained on web-scale open data, VLMs offer powerful capabilities for solving downstream tasks after being adapted to task-specific labeled data. Yet, data labeling can be expensive and may demand domain expertise. Active Learning (AL)…

Computer Vision and Pattern Recognition · Computer Science 2025-06-03 Tong Wang , Jiaqi Wang , Shu Kong

Log anomaly detection refers to the task that distinguishes the anomalous log messages from normal log messages. Transformer-based large language models (LLMs) are becoming popular for log anomaly detection because of their superb ability…

Machine Learning · Computer Science 2025-03-20 Zhuoyi Yang , Ian G. Harris

Modern AI algorithms require labeled data. In real world, majority of data are unlabeled. Labeling the data are costly. this is particularly true for some areas requiring special skills, such as reading radiology images by physicians. To…

Machine Learning · Statistics 2026-03-31 Yiran Huang , Jian-Feng Yang , Haoda Fu

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

In many real-world AD applications including computer security and fraud prevention, the anomaly detector must be configurable by the human analyst to minimize the effort on false positives. One important way to configure the detector is by…

Machine Learning · Computer Science 2024-05-15 Shubhomoy Das , Md Rakibul Islam , Nitthilan Kannappan Jayakodi , Janardhan Rao Doppa

Large language models (LLMs) have shown their potential in long-context understanding and mathematical reasoning. In this paper, we study the problem of using LLMs to detect tabular anomalies and show that pre-trained LLMs are zero-shot…

Machine Learning · Computer Science 2024-06-25 Aodong Li , Yunhan Zhao , Chen Qiu , Marius Kloft , Padhraic Smyth , Maja Rudolph , Stephan Mandt

Large Language Models (LLMs) have shown great promise in automating data analytics tasks by interpreting natural language queries and generating multi-operation execution plans. However, existing LLM-agent-based analytics frameworks operate…

Artificial Intelligence · Computer Science 2025-11-03 Haichao Ji , Zibo Wang , Cheng Pan , Meng Han , Yifei Zhu , Dan Wang , Zhu Han

Low-resource languages face significant barriers in AI development due to limited linguistic resources and expertise for data labeling, rendering them rare and costly. The scarcity of data and the absence of preexisting tools exacerbate…

Computation and Language · Computer Science 2024-06-25 Nataliia Kholodna , Sahib Julka , Mohammad Khodadadi , Muhammed Nurullah Gumus , Michael Granitzer

Recent approaches to large language model (LLM) alignment typically require millions of human annotations or rely on external aligned models for synthetic data generation. This paper introduces ALMA: Alignment with Minimal Annotation,…

Computation and Language · Computer Science 2024-12-06 Michihiro Yasunaga , Leonid Shamis , Chunting Zhou , Andrew Cohen , Jason Weston , Luke Zettlemoyer , Marjan Ghazvininejad

We present HCLA, a human-centered multi-agent system for anomaly detection in digital-asset transactions. The system integrates three cognitively aligned roles: Rule Abstraction, Evidence Scoring, and Expert-Style Justification. These roles…

Artificial Intelligence · Computer Science 2026-03-10 Gyuyeon Na , Minjung Park , Hyeonjeong Cha , Sangmi Chai

Active learning algorithms automatically identify the most informative samples from large amounts of unlabeled data and tremendously reduce human annotation effort in inducing a machine learning model. In a conventional active learning…

Machine Learning · Computer Science 2026-04-28 Varun Totakura , Ankita Singh , Yushun Dong , Shayok Chakraborty

Computer network anomaly detection and log analysis, as an important topic in the field of network security, has been a key task to ensure network security and system reliability. First, existing network anomaly detection and log analysis…

Machine Learning · Computer Science 2024-09-17 Shuzhan Wang , Ruxue Jiang , Zhaoqi Wang , Yan Zhou

Existing active learning studies typically work in the closed-set setting by assuming that all data examples to be labeled are drawn from known classes. However, in real annotation tasks, the unlabeled data usually contains a large amount…

Machine Learning · Computer Science 2022-01-19 Kun-Peng Ning , Xun Zhao , Yu Li , Sheng-Jun Huang

Anomalies are often indicators of malfunction or inefficiency in various systems such as manufacturing, healthcare, finance, surveillance, to name a few. While the literature is abundant in effective detection algorithms due to this…

Machine Learning · Computer Science 2023-04-10 Xueying Ding , Nikita Seleznev , Senthil Kumar , C. Bayan Bruss , Leman Akoglu

LLM implementations are failing in highly regulated industries owing to instability issues, inconsistent reasoning, hallucinations and performance variability, especially in workflows. These reliability issues restrict safe use of LLM in…

Artificial Intelligence · Computer Science 2025-12-17 Gangesh Pathak , Prasanna Kumar

Active learning (AL) is a promising ML paradigm that has the potential to parse through large unlabeled data and help reduce annotation cost in domains where labeling data can be prohibitive. Recently proposed neural network based AL…

Machine Learning · Computer Science 2022-06-17 Prateek Munjal , Nasir Hayat , Munawar Hayat , Jamshid Sourati , Shadab Khan

Security analysts are overwhelmed by the volume of alerts and the low context provided by many detection systems. Early-stage investigations typically require manual correlation across multiple log sources, a task that is usually…

Cryptography and Security · Computer Science 2026-04-29 Even Eilertsen , Vasileios Mavroeidis , Gudmund Grov

Collecting high-quality labeled data for model training is notoriously time-consuming and labor-intensive for various NLP tasks. While copious solutions, such as active learning for small language models (SLMs) and prevalent in-context…

Computation and Language · Computer Science 2023-11-28 Ruixuan Xiao , Yiwen Dong , Junbo Zhao , Runze Wu , Minmin Lin , Gang Chen , Haobo Wang

Supervised learning relies on high-quality labeled data, but obtaining such data through human annotation is both expensive and time-consuming. Recent work explores using large language models (LLMs) for annotation, but LLM-generated labels…

Machine Learning · Computer Science 2026-03-23 Lequan Lin , Dai Shi , Andi Han , Feng Chen , Qiuzheng Chen , Jiawen Li , Zhaoyang Li , Jiyuan Li , Zhenbang Sun , Junbin Gao