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arXiv 2006.07341q-bio.PEphysics.soc-phq-fin.MF
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利用对称性、凸性调整和债券价格解决羊群免疫问题

Addressing the Herd Immunity Paradox Using Symmetry, Convexity Adjustments and Bond Prices

Peter Cotton

摘要:

在恒定参数房室模型中,群体免疫的早期发生与早期生长阶段的R值估计值不一致。本文利用利率建模理论的结果,即Vasicek的债券定价公式,以及受统计学基础结果de Finetti定理启发的方法,来说明如何解释建模差异。此外,经典常参数流行病模型的预测与变分和随机演化模型的预测之间的差异可以归结为简单的“凸性”公式。这种方法的一个新的特点是,我们不试图找到一个真正的模型,但只有一个模型,是等价的排列后。凸度调整也可以用于横截面比较,我们得出易于使用的经验法则,估计阈值感染水平在一个地区的阈值感染的知识在另一个。

英文摘要:

In constant parameter compartmental models an early onset of herd immunity is at odds with estimates of R values from early stage growth. This paper utilizes a result from the theory of interest rate modeling, namely a bond pricing formula of Vasicek, and an approach inspired by a foundational result in statistics, de Finetti's Theorem, to show how the modeling discrepancy can be explained. Moreover the difference between predictions of classic constant parameter epidemiological models and those with variation and stochastic evolution can be reduced to simple "convexity" formulas. A novel feature of this approach is that we do not attempt to locate a true model but only a model that is equivalent after permutations. Convexity adjustments can also be used for cross sectional comparisons and we derive easy to use rules of thumb for estimating threshold infection level in one region given knowledge of threshold infection in another.

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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