Integrating Sensor Embeddings with Variant Transformer Graph Networks for Enhanced Anomaly Detection in Multi-Source Data

Fanjie Meng, Liwei Ma, Yixin Chen (), Wangpeng He (), Zhaoqiang Wang and Yu Wang
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Fanjie Meng: School of Aerospace Science and Technology, Xidian University, Xi’an 710071, China
Liwei Ma: School of Mechanical Engineering, Xi’an Jiao Tong University, Xi’an 710049, China
Yixin Chen: Key Laboratory of Expressway Construction Machinery of Shaanxi Province, Chang’an University, Xi’an 710064, China
Wangpeng He: School of Aerospace Science and Technology, Xidian University, Xi’an 710071, China
Zhaoqiang Wang: High-Tech Institute of Xi’an, Xi’an 710025, China
Yu Wang: School of Mechanical Engineering, Xi’an Jiao Tong University, Xi’an 710049, China

Mathematics, 2024, vol. 12, issue 17, 1-14

Abstract: With the rapid development of sensor technology, the anomaly detection of multi-source time series data becomes more and more important. Traditional anomaly detection methods deal with the temporal and spatial information in the data independently, and fail to make full use of the potential of spatio-temporal information. To address this issue, this paper proposes a novel integration method that combines sensor embeddings and temporal representation networks, effectively exploiting spatio-temporal dynamics. In addition, the graph neural network is introduced to skillfully simulate the complexity of multi-source heterogeneous data. By applying a dual loss function—consisting of a reconstruction loss and a prediction loss—we further improve the accuracy of anomaly detection. This strategy not only promotes the ability to learn normal behavior patterns from historical data, but also significantly improves the predictive ability of the model, making anomaly detection more accurate. Experimental results on four multi-source sensor datasets show that our proposed method performs better than the existing models. In addition, our approach enhances the ability to interpret anomaly detection by analyzing the sensors associated with the detected anomalies.

Keywords: multi-source time series; anomaly detection; graph neural network; model interpretability (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2024
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