arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.13483stat.AP
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预测日本COVID-19感染的状态空间建模方法

Predicting Infection of COVID-19 in Japan: State Space Modeling Approach

Genya Kobayashi, Shonosuke Sugasawa, Hiromasa Tamae, Takayuki Ozu

摘要:

日本的冠状病毒病(COVID-19)确诊病例数量日益增加,特别是在2020年4月7日宣布紧急状态后,对社会产生了严重影响。该研究采用基于状态空间模型的复杂统计建模工具,结合著名的易感染暴露感染(SIR)模型,分析了2020年3月1日至4月22日的实时数据。使用贝叶斯方法进行模型估计和预测。本研究提供了未知参数的参数估计,关键决定了来自SIR模型和预测的传染比例的未来过渡,包括流行高峰的大小和时间的预测区间,自然占的不确定性的流行过程。各种情景下的预测结果显示,感染率暂时降低,直到5月6日按计划解除状态,只会使疫情高峰略微推迟。为了最大限度地减少疫情的传播,强烈建议延长干预时间,即使在解除之后,政府和个人也要长期努力降低感染率。

英文摘要:

The number of confirmed cases of the coronavirus disease (COVID-19) in Japan has been increasing day by day and has had a serious impact on the society especially after the declaration of the state of emergency on April 7, 2020. This study analyzes the real time data from March 1 to April 22, 2020 by adopting a sophisticated statistical modeling tool based on the state space model combined with the well-known susceptible-exposed-infected (SIR) model. The model estimation and forecasting are conducted using the Bayesian methodology. The present study provides the parameter estimates of the unknown parameters that critically determine the epidemic process derived from the SIR model and prediction of the future transition of the infectious proportion including the size and timing of the epidemic peak with the prediction intervals that naturally accounts for the uncertainty. The prediction results under various scenarios reveals that the temporary reduction in the infection rate until the planned lifting of the state on May 6 will only delay the epidemic peak slightly. In order to minimize the spread of the epidemic, it is strongly suggested that an intervention is carried out for an extended period of time and that the government and individuals make a long term effort to reduce the infection rate even after the lifting.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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