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Chin. Phys. B, 2021, Vol. 30(12): 120203    DOI: 10.1088/1674-1056/ac3229
Special Issue: SPECIAL TOPIC— Interdisciplinary physics: Complex network dynamics and emerging technologies
SPECIAL TOPIC—Interdisciplinary physics: Complex network dynamics and emerging technologies Prev   Next  

Optimal control strategy for COVID-19 concerning both life and economy based on deep reinforcement learning

Wei Deng(邓为)1, Guoyuan Qi(齐国元)1,†, and Xinchen Yu(蔚昕晨)2
1 Tianjin Key Laboratory of Advanced Technology in Electrical Engineering and Energy, School of Control Science and Engineering, Tiangong University, Tianjin 300387, China;
2 School of Mechanical Engineering, Tiangong University, Tianjin 300387, China
Abstract  At present, the global COVID-19 is still severe. More and more countries have experienced second or even third outbreaks. The epidemic is far from over until the vaccine is successfully developed and put on the market on a large scale. Inappropriate epidemic control strategies may bring catastrophic consequences. It is essential to maximize the epidemic restraining and to mitigate economic damage. However, the study on the optimal control strategy concerning both sides is rare, and no optimal model has been built. In this paper, the Susceptible-Infectious-Hospitalized-Recovered (SIHR) compartment model is expanded to simulate the epidemic's spread concerning isolation rate. An economic model affected by epidemic isolation measures is established. The effective reproduction number and the eigenvalues at the equilibrium point are introduced as the indicators of controllability and stability of the model and verified the effectiveness of the SIHR model. Based on the Deep Q Network (DQN), one of the deep reinforcement learning (RL) methods, the blocking policy is studied to maximize the economic output under the premise of controlling the number of infections in different stages. The epidemic control strategies given by deep RL under different learning strategies are compared for different reward coefficients. The study demonstrates that optimal policies may differ in various countries depending on disease spread and anti-economic risk ability. The results show that the more economical strategy, the less economic loss in the short term, which can save economically fragile countries from economic crises. In the second or third outbreak stage, the earlier the government adopts the control strategy, the smaller the economic loss. We recommend the method of deep RL to specify a policy which can control the epidemic while making quarantine economically viable.
Keywords:  COVID-19      SIHR model      deep reinforcement learning      DQN      secondary outbreak      economy  
Received:  30 August 2021      Revised:  14 October 2021      Accepted manuscript online:  22 October 2021
PACS:  02.70.-c (Computational techniques; simulations)  
  05.45.-a (Nonlinear dynamics and chaos)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 61873186) and the Tianjin Natural Science Foundation, China (Grant No. 17JCZDJC38300).
Corresponding Authors:  Guoyuan Qi     E-mail:  guoyuanqisa@qq.com

Cite this article: 

Wei Deng(邓为), Guoyuan Qi(齐国元), and Xinchen Yu(蔚昕晨) Optimal control strategy for COVID-19 concerning both life and economy based on deep reinforcement learning 2021 Chin. Phys. B 30 120203

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