BLOCKCHAIN-BASED FEDERATED LEARNING METHOD AND APPARATUS

Title:

BLOCKCHAIN-BASED FEDERATED LEARNING METHOD AND APPARATUS

Document Type and Number:

WIPO Patent Application WO/2022/217914

Kind Code:

A1

Abstract:

A blockchain-based federated learning method and apparatus. The method comprises: a first node trains an ith-round local model on the basis of local training data to determine gradient information of the trained (i+1)th-round local model (202), respectively clips and quantizes each piece of first sub-gradient information in the gradient information of the (i+1)th-round local model on the basis of gradient clipping and quantization rules to obtain each piece of second sub-gradient information (203), merges every m pieces of second sub-gradient information among all pieces of second sub-gradient information according to a gradient merging rule to obtain n types of third sub-gradient information (204), and performs homomorphic encryption on the n types of third sub-gradient information to obtain n types of ciphertexts (205), and sends the n types of ciphertexts to a blockchain (206). Because each piece of first sub-gradient information in the gradient information of the local model is respectively clipped, quantized and merged, and then homomorphic encryption is performed thereon, computing resource consumption generated by the homomorphic encryption can be reduced, and network resources consumed in the ciphertext transmission process can be reduced.

More Like This:

JP5140026	Database processing method, database processing program, and encryption device
WO/2021/111824	ELECTRONIC SIGNATURE SYSTEM AND TAMPER-PROOF DEVICE
JP4463323	Information exchange system

Inventors:

MIAO YINBIN (CN)
ZHENG WEI (CN)
TONG QIUYUN (CN)
MA ZHUORAN (CN)
FAN RUIBIN (CN)
ZHANG KAIXIANG (CN)
LI HUIZHONG (CN)
YAN QIANG (CN)
LI CHENGBO (CN)

Application Number:

PCT/CN2021/131317

Publication Date:

October 20, 2022

Filing Date:

November 17, 2021

Export Citation:

Click for automatic bibliography generation Help

Assignee:

WEBANK CO LTD (CN)
UNIV XIDIAN (CN)

International Classes:

G06F21/60; G06N20/20

Foreign References:

CN113095510A	2021-07-09
CN112288097A	2021-01-29
CN109951438A	2019-06-28
CN112235384A	2021-01-15
US20200380356A1	2020-12-03
CN111401552A	2020-07-10

Attorney, Agent or Firm:

TDIP & PARTNERS (CN)

Download PDF:

View/Download PDF PDF Help

Previous Patent: DISPLAY APPARATUS AND HOLOGRAPHIC DISPLAY DEVICE

Next Patent: VEHICLE CONTROL METHOD AND APPARATUS, DEVICE, AND COMPUTER STORAGE MEDIUM