Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD AND DEVICE FOR JOINTLY TRAINING LOGISTIC REGRESSION MODEL BY MULTIPLE COMPUTING UNITS
Document Type and Number:
WIPO Patent Application WO/2021/073234
Kind Code:
A1
Abstract:
A method and device for jointly training a logistic regression model by multiple computing units. First parts of features and sample labels of samples are stored in a main computing unit, and second parts of features of the samples are stored in an auxiliary computing unit. In an iteration process of joint training, for any sampled sample, the main computing unit and the auxiliary computing unit respectively obtain part processing values according to locally stored feature parts of the sample and model parameter parts. After collecting all the part processing values, the main computing unit obtains an intermediate value, which does not leak the label value, by means of variance reduction according to a total processing value, the label value of the sample and a gradient value stored during sampling of the sample, and sends same to the auxiliary computing unit. Thus, the computing units can update model parameters according to the intermediate value for subsequent iteration.

Inventors:
SHEN, Shuheng (8th Floor Section B,Suite 801-11,West Lake Distric, Hangzhou Zhejiang 0, CN)
ZHENG, Lin (8th Floor Section B,Suite 801-11,West Lake Distric, Hangzhou Zhejiang 0, CN)
NI, Xiang (8th Floor Section B,Suite 801-11,West Lake Distric, Hangzhou Zhejiang 0, CN)
LU, Mengqian (8th Floor Section B,Suite 801-11,West Lake Distric, Hangzhou Zhejiang 0, CN)
JI, Xiaoxi (8th Floor Section B,Suite 801-11,West Lake Distric, Hangzhou Zhejiang 0, CN)
Application Number:
CN2020/108941
Publication Date:
April 22, 2021
Filing Date:
August 13, 2020
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ALIPAY (HANGZHOU) INFORMATION TECHNOLOGY CO., LTD. (8th Floor Section B,Suite 801-11,West Lake Distric, Hangzhou Zhejiang 0, CN)
International Classes:
G06N20/00
Attorney, Agent or Firm:
BEIJING BESTIPR INTELLECTUAL PROPERTY LAW CORPORATION (Tower B Kawah Building,No.9 Shangdi 3rd Street,Haidian District, Beijing 5, CN)
Download PDF: