Caragiannis, Ioannis and Kanellopoulos, Panagiotis and Voudouris, Alexandros A (2022) 'Bounding the Inefficiency of Compromise in Opinion Formation.' Algorithmica, 84 (1). pp. 234-271. ISSN 0178-4617
|
Text
s00453-021-00892-x.pdf - Published Version Available under License Creative Commons Attribution. Download (789kB) | Preview |
Abstract
Social networks on the Internet have seen an enormous growth recently and play a crucial role in different aspects of today’s life. They have facilitated information dissemination in ways that have been beneficial for their users but they are often used strategically in order to spread information that only serves the objectives of particular users. These properties have inspired a revision of classical opinion formation models from sociology using game-theoretic notions and tools. We follow the same modeling approach, focusing on scenarios where the opinion expressed by each user is a compromise between her internal belief and the opinions of a small number of neighbors among her social acquaintances. We formulate simple games that capture this behavior and quantify the inefficiency of equilibria using the well-known notion of the price of anarchy. Our results indicate that compromise comes at a cost that strongly depends on the neighborhood size.
Item Type: | Article |
---|---|
Uncontrolled Keywords: | Opinion formation; Nash equilibrium; Price of anarchy |
Divisions: | Faculty of Science and Health Faculty of Science and Health > Computer Science and Electronic Engineering, School of |
SWORD Depositor: | Elements |
Depositing User: | Elements |
Date Deposited: | 25 Nov 2021 13:30 |
Last Modified: | 24 Jan 2022 21:15 |
URI: | http://repository.essex.ac.uk/id/eprint/31661 |
Actions (login required)
![]() |
View Item |