A comprehensive survey of federated transfer learning:challenges,methods and applications  

作　　者：Wei GUO Fuzhen ZHUANG Xiao ZHANG Yiqi TONG Jin DONG 

机构地区：[1]Institute of Artificial Intelligence,Beihang University,Beijing 100191,China [2]SKLSDE,School of Computer Science,Beihang University,Beijing 100191,China [3]School of Computer Science and Technology,Shandong University,Shandong 266237,China [4]Beijing Academy of Blockchain and Edge Computing,Beijing 100080,China

出　　处：《Frontiers of Computer Science》2024年第6期27-60,共34页计算机科学前沿（英文版）

基　　金：the National Key R&D Program of China(No.2021ZD0113602);the National Natural Science Foundation of China(Grant Nos.62176014 and 62202273)。

摘　　要：Federated learning(FL)is a novel distributed machine learning paradigm that enables participants to collaboratively train a centralized model with privacy preservation by eliminating the requirement of data sharing.In practice,FL often involves multiple participants and requires the third party to aggregate global information to guide the update of the target participant.Therefore,many FL methods do not work well due to the training and test data of each participant may not be sampled from the same feature space and the same underlying distribution.Meanwhile,the differences in their local devices(system heterogeneity),the continuous influx of online data(incremental data),and labeled data scarcity may further influence the performance of these methods.To solve this problem,federated transfer learning(FTL),which integrates transfer learning(TL)into FL,has attracted the attention of numerous researchers.However,since FL enables a continuous share of knowledge among participants with each communication round while not allowing local data to be accessed by other participants,FTL faces many unique challenges that are not present in TL.In this survey,we focus on categorizing and reviewing the current progress on federated transfer learning,and outlining corresponding solutions and applications.Furthermore,the common setting of FTL scenarios,available datasets,and significant related research are summarized in this survey.

关 键 词：federated transfer learning federated learning transfer learning SURVEY 

分 类 号：TP181[自动化与计算机技术—控制理论与控制工程]