Scattered model aggregation method and system for e-commerce platform

The invention relates to a decentralized model aggregation method and system for an e-commerce platform, and relates to the technical field of data security and privacy protection, and the method comprises the steps: selecting a minimum number of cluster heads to cover all edge devices, hanging a plurality of edge devices under each head, and hanging a plurality of cluster heads under a server; all the edge models in the same cluster are periodically aggregated according to a first period k1 to update a cluster head model, and the cluster head models among all the clusters are periodically aggregated according to a second period k2 to update a global model; selecting the cluster head with the maximum bandwidth from all the cluster heads with the minimum number as a calibration cluster head, and updating other cluster heads except the calibration cluster head until the sum of the cluster overhead and the global overhead is minimized; and updating the first period k1 and the second period k2 until the sum of th