DATA PROTECTION METHOD AND APPARATUS, AND SERVER AND MEDIUM

WIPO Patent Application WO/2022/007651

A1

Disclosed are a data protection method and apparatus, and a server and a medium. A particular embodiment of the method comprises: acquiring gradient associated information, which respectively corresponds to a target sample that belongs to a binary classification sample set with unbalanced distribution and a reference sample that belongs to the same batch as the target sample; according to a comparison result of the gradient associated information corresponding to the target sample and the gradient associated information corresponding to the reference sample, generating information of data noise to be added; according to the information of said data noise, correcting an initial gradient transfer value corresponding to the target sample, such that corrected gradient transfer information corresponding to samples in the sample set that belong to different types is consistent; and sending the gradient transfer information to a passive party of a joint training model. By means of the embodiment, there is no significant difference between corrected gradient transfer information corresponding to positive and negative samples, thereby effectively protecting the security of data.

SUN JIANKAI (US)
GAO WEIHAO (CN)
ZHANG HONGYI (US)
WANG CHONG (US)
XIE JUNYUAN (CN)
WU LIANGCHAO (CN)
LIU XIAOBING (US)

PCT/CN2021/102488

January 13, 2022

June 25, 2021

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BEIJING BYTEDANCE NETWORK TECH CO LTD (CN)
BYTEDANCE INC (US)

G06K9/62; G06F21/62; G06N20/00

CN111783142A	2020-10-16
CN109919299A	2019-06-21
CN109165515A	2019-01-08
CN108416370A	2018-08-17
US6680735B1	2004-01-20

EAST & CONCORD PARTNERS (CN)

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