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Time series anomaly detection is a challenging problem due to the complex temporal dependencies and the limited label data. Although some algorithms including both traditional and deep models have been proposed, most of them mainly focus on…

机器学习 · 计算机科学 2023-03-28 Chaoli Zhang , Tian Zhou , Qingsong Wen , Liang Sun

In this paper, we introduce AdaSelection, an adaptive sub-sampling method to identify the most informative sub-samples within each minibatch to speed up the training of large-scale deep learning models without sacrificing model performance.…

机器学习 · 计算机科学 2023-06-21 Minghe Zhang , Chaosheng Dong , Jinmiao Fu , Tianchen Zhou , Jia Liang , Jia Liu , Bo Liu , Michinari Momma , Bryan Wang , Yan Gao , Yi Sun

Time series anomaly detection (TSAD) finds many applications such as monitoring environmental sensors, industry KPIs, patient biomarkers, etc. A two-fold challenge for TSAD is a versatile and unsupervised model that can detect various…

机器学习 · 计算机科学 2025-05-07 Boje Deforce , Meng-Chieh Lee , Bart Baesens , Estefanía Serral Asensio , Jaemin Yoo , Leman Akoglu

Time series anomaly detection (TSAD) is a critical task, but developing models that generalize to unseen data in a zero-shot manner remains a major challenge. Prevailing foundation models for TSAD predominantly rely on reconstruction-based…

机器学习 · 计算机科学 2026-05-29 Tian Lan , Hao Duong Le , Jinbo Li , Wenjun He , Meng Wang , Chenghao Liu , Chen Zhang

Time series anomaly detection plays a vital role in a wide range of applications. Existing methods require training one specific model for each dataset, which exhibits limited generalization capability across different target datasets,…

机器学习 · 计算机科学 2025-03-04 Qichao Shentu , Beibu Li , Kai Zhao , Yang Shu , Zhongwen Rao , Lujia Pan , Bin Yang , Chenjuan Guo

Despite the prevalence of reconstruction-based deep learning methods, time series anomaly detection remains a tremendous challenge. Existing approaches often struggle with limited temporal contexts, insufficient representation of normal…

机器学习 · 计算机科学 2025-07-16 Zhijie Zhong , Zhiwen Yu , Xing Xi , Yue Xu , Wenming Cao , Yiyuan Yang , Kaixiang Yang , Jane You

In practice, machine learning methods commonly require anomaly detection (AD) to filter inputs or detect distributional shifts. Typically, this is implemented by running a separate AD model alongside the primary model. However, this…

机器学习 · 计算机科学 2026-03-19 Luca Hinkamp , Simon Klüttermann , Emmanuel Müller

The ongoing challenges in time series anomaly detection (TSAD), notably the scarcity of anomaly labels and the variability in anomaly lengths and shapes, have led to the need for a more efficient solution. As limited anomaly labels hinder…

机器学习 · 计算机科学 2023-11-28 Yuting Sun , Guansong Pang , Guanhua Ye , Tong Chen , Xia Hu , Hongzhi Yin

Fault diagnosis plays a crucial role in maintaining the operational integrity of mechanical systems, preventing significant losses due to unexpected failures. As intelligent manufacturing and data-driven approaches evolve, Deep Learning…

机器学习 · 计算机科学 2024-04-01 Zhongzhi Li , Rong Fan , Jingqi Tu , Jinyi Ma , Jianliang Ai , Yiqun Dong

Time series anomaly detection (TSAD) is of widespread interest across many industries, including finance, healthcare, and manufacturing. Despite the development of numerous automatic methods for detecting anomalies, human oversight remains…

计算与语言 · 计算机科学 2025-03-31 Alan Yang , Yulin Chen , Sean Lee , Venus Montes

Time series anomaly detection (TSAD) has been a research hotspot in both academia and industry in recent years. Deep learning methods have become the mainstream research direction due to their excellent performance. However, new viewpoints…

机器学习 · 计算机科学 2024-12-10 Pengyu Li , Zhijie Zhong , Tong Zhang , Zhiwen Yu , C. L. Philip Chen , Kaixiang Yang

Deep learning models, particularly recurrent neural networks and their variants, such as long short-term memory, have significantly advanced time series data analysis. These models capture complex, sequential patterns in time series,…

机器学习 · 计算机科学 2026-01-12 Nilushika Udayangani , Kishor Nandakishor , Marimuthu Palaniswami

This study investigates a method to evaluate time-series datasets in terms of the performance of deep neural networks (DNNs) with state space models (deep SSMs) trained on the dataset. SSMs have attracted attention as components inside DNNs…

机器学习 · 计算机科学 2024-08-30 Sekitoshi Kanai , Yasutoshi Ida , Kazuki Adachi , Mihiro Uchida , Tsukasa Yoshida , Shin'ya Yamaguchi

Knowledge Distillation (KD) compresses neural networks by learning a small network (student) via transferring knowledge from a pre-trained large network (teacher). Many endeavours have been devoted to the image domain, while few works focus…

计算机视觉与模式识别 · 计算机科学 2025-07-08 Ping Li , Chenhao Ping , Wenxiao Wang , Mingli Song

Time series anomaly detection (TSAD) is critical for maintaining the reliability of modern IT infrastructures, where complex anomalies frequently arise in highly dynamic environments. In this paper, we present TShape, a novel framework…

软件工程 · 计算机科学 2025-10-02 Hang Cui , Jingjing Li , Haotian Si , Quan Zhou , Changhua Pei , Gaogang Xie , Dan Pei

High-dimensional data in many machine learning applications leads to computational and analytical complexities. Feature selection provides an effective way for solving these problems by removing irrelevant and redundant features, thus…

机器学习 · 计算机科学 2019-03-19 Ali Mirzaei , Vahid Pourahmadi , Mehran Soltani , Hamid Sheikhzadeh

Knowledge distillation (KD) is an effective tool for compressing deep classification models for edge devices. However, the performance of KD is affected by the large capacity gap between the teacher and student networks. Recent methods have…

计算机视觉与模式识别 · 计算机科学 2022-09-19 Ibtihel Amara , Maryam Ziaeefard , Brett H. Meyer , Warren Gross , James J. Clark

Distantly-Supervised Named Entity Recognition (DS-NER) effectively alleviates the data scarcity problem in NER by automatically generating training samples. Unfortunately, the distant supervision may induce noisy labels, thus undermining…

计算与语言 · 计算机科学 2022-12-14 Xiaoye Qu , Jun Zeng , Daizong Liu , Zhefeng Wang , Baoxing Huai , Pan Zhou

Anomaly detection in decision-making sequences is a challenging problem due to the complexity of normality representation learning and the sequential nature of the task. Most existing methods based on Reinforcement Learning (RL) are…

机器学习 · 计算机科学 2024-02-08 Chen Wang , Sarah Erfani , Tansu Alpcan , Christopher Leckie

Time series anomaly detection (TSAD) plays a vital role in various domains such as healthcare, networks, and industry. Considering labels are crucial for detection but difficult to obtain, we turn to TSAD with inexact supervision: only…

机器学习 · 计算机科学 2024-01-23 Chen Liu , Shibo He , Haoyu Liu , Shizhong Li