Change time estimation uncertainty in nonlinear dynamical systems with applications to COVID‐19
Change time estimation uncertainty in nonlinear dynamical systems with applications to COVID‐19
复制标题
改变非线性动力系统中的时间估计不确定性及其在 COVID-19 中的应用
DOI:
10.1002/rnc.5974
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发表时间:
2022
影响因子:
3.9
通讯作者:
Sandberg, Henrik
中科院分区:
文献类型:
--
作者:
Alisic, Rijad;Paré, Philip E.;Sandberg, Henrik
The impact that each individual non‐pharmaceutical intervention (NPI) had on the spread rate of COVID‐19 is difficult to estimate, since several NPIs were implemented in rapid succession in most countries. In this article, we analyze the detectability of sudden changes in a parameter of nonlinear dynamical systems, which could be used to represent NPIs or mutations of the virus, in the presence of measurement noise. Specifically, by taking an agnostic approach, we provide necessary conditions for when the best possible unbiased estimator is able to isolate the effect of a sudden change in a model parameter, by using the Hammersley–Chapman–Robbins (HCR) lower bound. Several simplifications to the calculation of the HCR lower bound are given, which depend on the amplitude of the sudden change and the dynamics of the system. We further define the concept of the most informative sample based on the largestdistance between two output trajectories, which is a good indicator of when the HCR lower bound converges. These results are thereafter used to analyze the susceptible‐infected‐removed model. For instance, we show that performing analysis using the number of recovered/deceased, as opposed to the cumulative number of infected, may be an inferior signal to use since sudden changes are fundamentally more difficult to estimate and seem to require more samples. Finally, these results are verified by simulations and applied to real data from the spread of COVID‐19 in France.
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DOI:
--
发表时间:
1961
期刊:
影响因子:
--
作者:
Guy Lebanon
通讯作者:
Guy Lebanon
影响因子:
3.7
作者:
Olivas-Martínez A;Cárdenas-Fragoso JL;Jiménez JV;Lozano-Cruz OA;Ortiz-Brizuela E;Tovar-Méndez VH;Medrano-Borromeo C;Martínez-Valenzuela A;Román-Montes CM;Martínez-Guerra B;González-Lara MF;Hernandez-Gilsoul T;Herrero AG;Tamez-Flores KM;Ochoa-Hein E;Ponce-de-León A;Galindo-Fraga A;Kershenobich-Stalnikowitz D;Sifuentes-Osornio J
通讯作者:
Sifuentes-Osornio J
DOI:
10.1007/978-981-15-0493-8
发表时间:
2020
期刊:
2019 American Control Conference (ACC)
影响因子:
--
作者:
K. Teranishi;M. Kusaka;Naoki Shimada;J. Ueda;K. Kogiso
通讯作者:
K. Kogiso
DOI:
10.1109/globalsip.2017.8308657
发表时间:
2017
期刊:
IEEE GlobalSIP
影响因子:
--
作者:
Maruf, Abdullah Al;Roy, Sandip
通讯作者:
Roy, Sandip
DOI:
--
发表时间:
1954
期刊:
影响因子:
--
作者:
S. Kullback
通讯作者:
S. Kullback