Toward Anomaly Behavior Detection as an Edge Network Service Using a Dual-Task Interactive Guided Neural Network

How to use artificial intelligence technology to mine human abnormal behavior from considerable video data generated by the Internet-of-Things system has been intensively studied for a long time. Existing deep learning anomaly detection algorithms deployed in the cloud typically perform supervised learning based on constant kinds of abnormal behavior data. However, this supervised learning model with preset abnormal behavior categories ignores the diversity and unpredictability of abnormal occurrences in open scenarios. Thus, we propose an abnormal behavior detection algorithm as an edge network service by combining the advantages of cloud computing and the efficiency of edge networks. This method combines the double verification of global behavior detection and local fine-grained action cycle alignment to detect whether a behavior is abnormal. Moreover, to enable abnormal behavior detection models to predict test samples whose categories do not appear during the training stage, we propose an active label learning algorithm based on cycle clustering, which not only improves the efficiency of data transmission between the edge and the cloud but also makes model updates in the cloud more efficient. Extensive and quantitative experimental results show that our method can not only accurately detect abnormal human behavior at the edge of limited resources but also has strong robustness under the interference of test samples of unknown categories.