中国物理B ›› 2023, Vol. 32 ›› Issue (5): 58702-058702.doi: 10.1088/1674-1056/acb490

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Stability and optimal control for delayed rumor-spreading model with nonlinear incidence over heterogeneous networks

Xupeng Luo(罗续鹏)1,2, Haijun Jiang(蒋海军)1,†, Shanshan Chen(陈珊珊)1, and Jiarong Li(李佳容)1   

  1. 1 College of Mathematics and System Sciences, Xinjiang University, Urumqi 830017, China;
    2 College of Mathematics and Physics, Guangxi Minzu University, Nanning 530006, China
  • 收稿日期:2022-09-25 修回日期:2022-12-16 接受日期:2023-01-19 出版日期:2023-04-21 发布日期:2023-05-09
  • 通讯作者: Haijun Jiang E-mail:jianghaijunxju@163.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of People's Republic of China (Grant Nos. U1703262 and 62163035), the Special Project for Local Science and Technology Development Guided by the Central Government (Grant No. ZYYD2022A05), and Xinjiang Key Laboratory of Applied Mathematics (Grant No. XJDX1401).

Stability and optimal control for delayed rumor-spreading model with nonlinear incidence over heterogeneous networks

Xupeng Luo(罗续鹏)1,2, Haijun Jiang(蒋海军)1,†, Shanshan Chen(陈珊珊)1, and Jiarong Li(李佳容)1   

  1. 1 College of Mathematics and System Sciences, Xinjiang University, Urumqi 830017, China;
    2 College of Mathematics and Physics, Guangxi Minzu University, Nanning 530006, China
  • Received:2022-09-25 Revised:2022-12-16 Accepted:2023-01-19 Online:2023-04-21 Published:2023-05-09
  • Contact: Haijun Jiang E-mail:jianghaijunxju@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of People's Republic of China (Grant Nos. U1703262 and 62163035), the Special Project for Local Science and Technology Development Guided by the Central Government (Grant No. ZYYD2022A05), and Xinjiang Key Laboratory of Applied Mathematics (Grant No. XJDX1401).

摘要: On the multilingual online social networks of global information sharing, the wanton spread of rumors has an enormous negative impact on people's lives. Thus, it is essential to explore the rumor-spreading rules in multilingual environment and formulate corresponding control strategies to reduce the harm caused by rumor propagation. In this paper, considering the multilingual environment and intervention mechanism in the rumor-spreading process, an improved ignorants-spreaders-1-spreaders-2-removers (I2SR) rumor-spreading model with time delay and the nonlinear incidence is established in heterogeneous networks. Firstly, based on the mean-field equations corresponding to the model, the basic reproduction number is derived to ensure the existence of rumor-spreading equilibrium. Secondly, by applying Lyapunov stability theory and graph theory, the global stability of rumor-spreading equilibrium is analyzed in detail. In particular, aiming at the lowest control cost, the optimal control scheme is designed to optimize the intervention mechanism, and the optimal control conditions are derived using the Pontryagin's minimum principle. Finally, some illustrative examples are provided to verify the effectiveness of the theoretical results. The results show that optimizing the intervention mechanism can effectively reduce the densities of spreaders-1 and spreaders-2 within the expected time, which provides guiding insights for public opinion managers to control rumors.

关键词: rumor propagation, heterogeneous network, nonlinear incidence, optimal control

Abstract: On the multilingual online social networks of global information sharing, the wanton spread of rumors has an enormous negative impact on people's lives. Thus, it is essential to explore the rumor-spreading rules in multilingual environment and formulate corresponding control strategies to reduce the harm caused by rumor propagation. In this paper, considering the multilingual environment and intervention mechanism in the rumor-spreading process, an improved ignorants-spreaders-1-spreaders-2-removers (I2SR) rumor-spreading model with time delay and the nonlinear incidence is established in heterogeneous networks. Firstly, based on the mean-field equations corresponding to the model, the basic reproduction number is derived to ensure the existence of rumor-spreading equilibrium. Secondly, by applying Lyapunov stability theory and graph theory, the global stability of rumor-spreading equilibrium is analyzed in detail. In particular, aiming at the lowest control cost, the optimal control scheme is designed to optimize the intervention mechanism, and the optimal control conditions are derived using the Pontryagin's minimum principle. Finally, some illustrative examples are provided to verify the effectiveness of the theoretical results. The results show that optimizing the intervention mechanism can effectively reduce the densities of spreaders-1 and spreaders-2 within the expected time, which provides guiding insights for public opinion managers to control rumors.

Key words: rumor propagation, heterogeneous network, nonlinear incidence, optimal control

中图分类号:  (Dynamics of social systems)

  • 87.23.Ge
05.45.-a (Nonlinear dynamics and chaos) 02.30.Ks (Delay and functional equations) 02.30.Yy (Control theory)