Anomaly transformer: Time series anomaly detection with association discrepancy

J Xu, H Wu, J Wang, M Long - arXiv preprint arXiv:2110.02642, 2021 - arxiv.org
Unsupervised detection of anomaly points in time series is a challenging problem, which
requires the model to derive a distinguishable criterion. Previous methods tackle the …

Rlad: Time series anomaly detection through reinforcement learning and active learning

T Wu, J Ortiz - arXiv preprint arXiv:2104.00543, 2021 - arxiv.org
We introduce a new semi-supervised, time series anomaly detection algorithm that uses
deep reinforcement learning (DRL) and active learning to efficiently learn and adapt to …

Timeautoad: Autonomous anomaly detection with self-supervised contrastive loss for multivariate time series

Y Jiao, K Yang, D Song, D Tao - IEEE Transactions on Network …, 2022 - ieeexplore.ieee.org
Multivariate time series (MTS) data are becoming increasingly ubiquitous in networked
systems, eg, IoT systems and 5G networks. Anomaly detection in MTS refers to identifying …

Time-series aware precision and recall for anomaly detection: considering variety of detection result and addressing ambiguous labeling

WS Hwang, JH Yun, J Kim, HC Kim - Proceedings of the 28th ACM …, 2019 - dl.acm.org
We proposetime-series aware precision andrecall, which are appropriate for evaluating
anomaly detection methods in time-series data. In time-series data, an anomaly corresponds …

DeepAnT: A deep learning approach for unsupervised anomaly detection in time series

M Munir, SA Siddiqui, A Dengel, S Ahmed - Ieee Access, 2018 - ieeexplore.ieee.org
Traditional distance and density-based anomaly detection techniques are unable to detect
periodic and seasonality related point anomalies which occur commonly in streaming data …

Calibrated one-class classification for unsupervised time series anomaly detection

H Xu, Y Wang, S Jian, Q Liao, Y Wang… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
Time series anomaly detection is instrumental in maintaining system availability in various
domains. Current work in this research line mainly focuses on learning data normality …

Learning robust deep state space for unsupervised anomaly detection in contaminated time-series

L Li, J Yan, Q Wen, Y Jin, X Yang - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Anomalies are ubiquitous in real-world time-series data which call for effective and timely
detection, especially in an unsupervised setting for labeling cost saving. In this paper, we …

Robusttad: Robust time series anomaly detection via decomposition and convolutional neural networks

J Gao, X Song, Q Wen, P Wang, L Sun, H Xu - arXiv preprint arXiv …, 2020 - arxiv.org
The monitoring and management of numerous and diverse time series data at Alibaba
Group calls for an effective and scalable time series anomaly detection service. In this paper …

FluxEV: a fast and effective unsupervised framework for time-series anomaly detection

J Li, S Di, Y Shen, L Chen - Proceedings of the 14th ACM International …, 2021 - dl.acm.org
Anomaly detection in time series is a research area of increasing importance. In order to
safeguard the availability and stability of services, large companies need to monitor various …

Daemon: Unsupervised anomaly detection and interpretation for multivariate time series

X Chen, L Deng, F Huang, C Zhang… - 2021 IEEE 37th …, 2021 - ieeexplore.ieee.org
In many complex systems, devices are typically monitored and generating massive
multivariate time series. However, due to the complex patterns and little useful labeled data …