Abstract
The devices deployed across diverse industrial scenarios have generated significant network traffic related to time. The system’s irregular operation could result in substantial bad influence. Anomaly detection technologies utilized for identifying possible non-standard behaviours are paramount; furthermore, multivariate time series exhibit complex dependencies besides temporal correlation. However, most previous methods merely consider the temporal and variable correlation of time series data, neglecting the distance metrics among the sequences, leading to a deficiency in the model’s anomaly detection ability. We propose a multivariate time series anomaly detection model based on the encoder–decoder architecture (CCER-ED). The model considers the similarity measure between temporal subsequences and designs a multi-scale feature embedding module for leveraging more interrelated properties. Moreover, the interrelations among sensors are explicitly learned using a manifold regularization graph structure. On this basis, an improved data fusion approach based on a multi-head self-attention mechanism is designed for capturing global feature representation, effectively integrating various aspects of information. Evaluations using the real-world datasets SWAT and WADI and performance analysis show that the proposed approach achieves improvement over the baselines in the recall and F1-score of anomaly detection performance at 9.3% and 8.5% (maximum), respectively, outperforming other existing methods.







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Funding
This work was partially supported by the Excellent Youth Funding of Hunan Provincial Education Department under Grant 23B0082, the Natural Science Foundation of Hunan Province under Grant 2021JJ30455, the National Key Research and Development Program of China under Grant 2021YFA1000600, the National Natural Science Foundation of China under Grant 62072170, the Science and Technology Project of Department of Communications of Hunan Provincial under Grant 202101, the Key Research and Development Program of Hunan Province under Grant 2022GK2015, the Hunan Provincial Natural Science Foundation of China under Grant 2021JJ30141, and the Open Research Fund of Hunan Provincial Key Laboratory of Network Investigational Technology under grant 2020WLZC001.
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JL was involved in Methodology, Writing-Original draft preparation, Software, and Supervision; CL contributed to Conceptualization, Methodology, Writing-Original draft preparation, Resources, and Software; RC was involved in Methodology, Data curation, and Resources; JY contributed to Resources, Software, and Validation; K-CL was involved in Methodology, Data curation, Validation, Visualization, Supervision, and Writing-Reviewing and Editing;
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Long, J., Luo, C., Chen, R. et al. A cross-layered cluster embedding learning network with regularization for multivariate time series anomaly detection. J Supercomput 80, 10444–10468 (2024). https://doi.org/10.1007/s11227-023-05833-9
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DOI: https://doi.org/10.1007/s11227-023-05833-9