公开(公告)号：US20230368025A1

公开(公告)日：2023-11-16

申请号：US18306513

申请日：2023-04-25

Applicant: Nokia Technologies Oy

Inventor： Ekdeep Singh LUBANA ,  Akhil MATHUR ,  Fahim KAWSAR

IPC: G06N3/08

CPC classification number: G06N3/08

Abstract: An apparatus, method and computer program is described comprising: obtaining local data comprising one or more samples at a user device; computing representations of at least some of said samples by passing said one or more samples through a local feature extractor; clustering the computed representations to generate local centroids; providing generated local centroids and parameters of the local feature extractor to a server; receiving global centroids and global feature extractor parameters from said server; updating the parameters of the local feature extractor based on the received global feature extractor parameters; assigning selected samples of one or more samples and one or more augmentations of said selected samples to global clusters; and further updating the updated parameters of the local feature extractor using machine learning principles, thereby generating a trained local feature extractor.