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arXiv · 2305.08977

Autoencoder-based Anomaly Detection in Streaming Data with Incremental Learning and Concept Drift Adaptation

Jin Li·Kleanthis Malialis·Marios M. Polycarpou
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Abstract

In our digital universe nowadays, enormous amount of data are produced in a streaming manner in a variety of application areas. These data are often unlabelled. In this case, identifying infrequent events, such as anomalies, poses a great challenge. This problem becomes even more difficult in non-stationary environments, which can cause deterioration of the predictive performance of a model. To address the above challenges, the paper proposes an autoencoder-based incremental learning method with drift detection (strAEm++DD). Our proposed method strAEm++DD leverages on the advantages of both incremental learning and drift detection. We conduct an experimental study using real-world and synthetic datasets with severe or extreme class imbalance, and provide an empirical analysis of strAEm++DD. We further conduct a comparative study, showing that the proposed method significantly outperforms existing baseline and advanced methods.

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Jin Li, Kleanthis Malialis, Marios M. Polycarpou. 2023-05-15. Autoencoder-based Anomaly Detection in Streaming Data with Incremental Learning and Concept Drift Adaptation. https://doi.org/10.1109/ijcnn54540.2023.10191328

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