The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 2026
Filed:
Mar. 03, 2022
Zhejiang University, Hangzhou, CN;
Jian Liu, Hangzhou, CN;
Rui Zhang, Hangzhou, CN;
Zhihua Tian, Hangzhou, CN;
Xiaoyang Hou, Hangzhou, CN;
Kui Ren, Hangzhou, CN;
ZHEJIANG UNIVERSITY, Hangzhou, CN;
Abstract
Provided is a decision tree-oriented vertical federated learning method, which mainly comprises the following steps: 1) all participants sorting local samples for each local feature, and then dividing the sorted samples into different blocks in sequence, each block being called a bucket; 2) for a group of samples corresponding to each feature, a bucket number of each sample under this feature having a certain probability to become other bucket numbers, and selecting an appropriate probability to make this encryption method meet the definition of differential privacy; 3) each participant sending serial numbers of buckets assigned to different samples under different features to the participant who holds a label, and this participant being called a coordinator; 4) the coordinator training a decision tree model according to these samples, and no other participants being needed in the training process.