Dealing with Unreliable Agents in Dynamic Gossip

Line van den Berg*, Malvin Gattinger

*Bijbehorende auteur voor dit werk

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Gossip describes the spread of information throughout a network of agents. It investigates how agents, each starting with a unique secret, can efficiently make peer-to-peer calls so that ultimately everyone knows all secrets. In Dynamic Gossip, agents share phone numbers in addition to secrets, which allows the network to grow at run-time.

Most gossip protocols assume that all agents are reliable, but this is not given for many practical applications. We drop this assumption and study Dynamic Gossip with unreliable agents. The aim is then for agents to learn all secrets of the reliable agents and to identify the unreliable agents.

We show that with unreliable agents classic results on Dynamic Gossip no longer hold. Specifically, the Learn New Secrets protocol is no longer characterised by the same class of graphs, so-called sun graphs. In addition, we show that unreliable agents that do not initiate communication are harder to identify than agents that do. This has paradoxical consequences for measures against unreliability, for example to combat the spread of fake news in social networks.
Originele taal-2English
TitelDynamic Logic. New Trends and Applications
SubtitelThird International Workshop, DaLí 2020, Prague, Czech Republic, October 9–10, 2020, Revised Selected Papers
RedacteurenManuel A. Martins, Igor Sedlár
Aantal pagina's17
ISBN van elektronische versie978-3-030-65840-3
ISBN van geprinte versie978-3-030-65839-7
StatusPublished - 22-dec.-2020

Publicatie series

NaamLecture Notes in Computer Science
ISSN van geprinte versie0302-9743
ISSN van elektronische versie1611-3349

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