Opinion Control under Adversarial Network Perturbation: A Stackelberg Game Approach

• URL: http://arxiv.org/abs/2304.12540v1
• Date: Tue, 25 Apr 2023 03:14:39 GMT
• Title: Opinion Control under Adversarial Network Perturbation: A Stackelberg Game Approach
• Authors: Yuejiang Li, Zhanjiang Chen, H. Vicky Zhao
• Abstract summary: adversarial network perturbation greatly influences the opinion formation of the public and threatens our societies. In this work, we model the adversarial network perturbation and analyze its impact on the networks' opinion. From the adversary's perspective, we formulate a Stackelberg game and aim to control the network's opinion even under such adversarial network perturbation.
• Score: 12.916992671437017
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The emerging social network platforms enable users to share their own opinions, as well as to exchange opinions with others. However, adversarial network perturbation, where malicious users intentionally spread their extreme opinions, rumors, and misinformation to others, is ubiquitous in social networks. Such adversarial network perturbation greatly influences the opinion formation of the public and threatens our societies. Thus, it is critical to study and control the influence of adversarial network perturbation. Although tremendous efforts have been made in both academia and industry to guide and control the public opinion dynamics, most of these works assume that the network is static, and ignore such adversarial network perturbation. In this work, based on the well-accepted Friedkin-Johnsen opinion dynamics model, we model the adversarial network perturbation and analyze its impact on the networks' opinion. Then, from the adversary's perspective, we analyze its optimal network perturbation, which maximally changes the network's opinion. Next, from the network defender's perspective, we formulate a Stackelberg game and aim to control the network's opinion even under such adversarial network perturbation. We devise a projected subgradient algorithm to solve the formulated Stackelberg game. Extensive simulations on real social networks validate our analysis of the adversarial network perturbation's influence and the effectiveness of the proposed opinion control algorithm.

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