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Epidemic models play a key role in understanding and responding to the emerging COVID-19 pandemic Widely used compartmental models are static and are of limited use to evaluate intervention strategies of combatting the pandemic Applying the technology of data assimilation, we propose a Bayesian updating approach for estimating epidemiological parameters using observable information to assess the impacts of different intervention strategies We adopt a concise renewal model and propose new parameters by disentangling the reduction of instantaneous reproduction number Rt into mitigation and suppression factors to quantify intervention impacts at a finer granularity A data assimilation framework is developed to estimate these parameters including constructing an observation function and developing a Bayesian updating scheme A statistical analysis framework is built to quantify the impacts of intervention strategies by monitoring the evolution of the estimated parameters We reveal the intervention impacts in European countries and Wuhan and the resurgence risk in the United States
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Ieee_Computational_Intelligence_Magazine
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A Bayesian Updating Scheme for Pandemics: Estimating the Infection Dynamics of COVID-19
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