Privacy-Preserving Event-Triggered Quantized Average Consensus

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Journal Title
Journal ISSN
Volume Title
Conference article in proceedings
Date
2020-12-14
Major/Subject
Mcode
Degree programme
Language
en
Pages
8
6246-6253
Series
Proceedings of the 59th IEEE Conference on Decision and Control, CDC 2020, Proceedings of the IEEE Conference on Decision & Control
Abstract
In this paper, we propose a privacy-preserving event-triggered quantized average consensus algorithm that allows agents to calculate the average of their initial values without revealing to other agents their specific value. We assume that agents (nodes) interact with other agents via directed communication links (edges), forming a directed communication topology (digraph). The proposed distributed algorithm can be followed by any agent wishing to maintain its privacy (i.e., not reveal the initial value it contributes to the average) to other, possibly multiple, curious but not malicious agents. Curious agents try to identify the initial values of other agents, but do not interfere in the computation in any other way. We develop a distributed strategy that allows agents while processing and transmitting quantized information, to preserve the privacy of their initial quantized values and at the same time to obtain, after a finite number of steps, the exact average of the initial values of the nodes. Illustrative examples demonstrate the validity and performance of our proposed algorithm.
Description
Keywords
Average consensus, Event-triggered, Privacy preservation, Quantized averaging
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Citation
Rikos , A I , Charalambous , T , Johansson , K H & Hadjicostis , C N 2020 , Privacy-Preserving Event-Triggered Quantized Average Consensus . in Proceedings of the 59th IEEE Conference on Decision and Control, CDC 2020 . , 9303771 , Proceedings of the IEEE Conference on Decision & Control , IEEE , pp. 6246-6253 , IEEE Conference on Decision and Control , Jeju Island , Korea, Republic of , 14/12/2020 . https://doi.org/10.1109/CDC42340.2020.9303771