公开(公告)号：US20230342669A1

公开(公告)日：2023-10-26

申请号：US18344188

申请日：2023-06-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yunfeng Shao ,  Bingshuai Li ,  Jun Wu ,  Haibo Tian

IPC: G06N20/00 ,  H04L9/00 ,  H04L9/08 ,  H04L9/30

CPC classification number: G06N20/00 ,  H04L9/008 ,  H04L9/088 ,  H04L9/30

Abstract: Embodiments of this application provide a machine learning model update method, applied to the field of artificial intelligence. The method includes: A first apparatus generates a first intermediate result based on a first data subset. The first apparatus receives an encrypted second intermediate result sent by a second apparatus, where the second intermediate result is generated based on a second data subset corresponding to the second apparatus. The first apparatus obtains a first gradient of a first model, where the first gradient of the first model is generated based on the first intermediate result and the encrypted second intermediate result. After being decrypted by using a second private key, the first gradient of the first model is for updating the first model, where the second private key is a decryption key generated by the second apparatus for homomorphic encryption.

公开(公告)号：US20230353347A1

公开(公告)日：2023-11-02

申请号：US18344185

申请日：2023-06-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yunfeng Shao ,  Bingshuai Li ,  Haibo Tian

IPC: H04L9/08 ,  H04L9/00

CPC classification number: H04L9/0836 ,  H04L9/008

Abstract: A first apparatus provides a second apparatus with encrypted label distribution information for the first node, so that the second apparatus calculates an intermediate parameter of a segmentation policy of the second apparatus side based on the encrypted label distribution information, and therefore a gain of the segmentation policy of the second apparatus side can be obtained. A preferred segmentation policy of the first node can also be obtained based on the gain of the segmentation policy of the second apparatus side and a gain of a segmentation policy of the first apparatus side. The encrypted label distribution information includes label data and distribution information, and is in a ciphertext state. The encrypted label distribution information can be used to determine the gain of the segmentation policy without leaking a distribution status of a sample set on the first node.