Title
Hierarchical Incentive Mechanism Design for Federated Machine Learning in Mobile Networks
Abstract
In recent years, the enhanced sensing and computation capabilities of Internet-of-Things (IoT) devices have opened the doors to several mobile crowdsensing applications. In mobile crowdsensing, a model owner announces a sensing task following which interested workers collect the required data. However, in some cases, a model owner may have insufficient data samples to build an effective machine learning model. To this end, we propose a federated learning (FL)-based privacy-preserving approach to facilitate collaborative machine learning among multiple model owners in mobile crowdsensing. Our system model allows collaborative machine learning without compromising data privacy given that only the model parameters instead of the raw data are exchanged within the federation. However, there are two main challenges of incentive mismatches between workers and model owners, as well as among model owners. For the former, we leverage on the self-revealing mechanism in the contract theory under information asymmetry. For the latter, to ensure the stability of a federation through preventing free-riding attacks, we use the coalitional game theory approach that rewards model owners based on their marginal contributions. Considering the inherent hierarchical structure of the involved entities, we propose a hierarchical incentive mechanism framework. Using the backward induction, we first solve the contract formulation and then proceed to solve the coalitional game with the merge and split algorithm. The numerical results validate the performance efficiency of our proposed hierarchical incentive mechanism design, in terms of incentive compatibility of our contract design and fair payoffs of model owners in stable federation formation.
Year
DOI
Venue
2020
10.1109/JIOT.2020.2985694
IEEE Internet of Things Journal
Keywords
DocType
Volume
Data models,Contracts,Machine learning,Games,Internet of Things,Sensors,Task analysis
Journal
7
Issue
ISSN
Citations 
10
2327-4662
18
PageRank 
References 
Authors
0.69
0
7
Name
Order
Citations
PageRank
Wei Yang Lim119313.37
Zehui Xiong258654.94
Chunyan Miao32307195.72
Niyato Dusit49486547.06
Qiang Yang517039875.69
Cyril Leung689962.23
H. V. Poor7254111951.66