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arXiv 1606.04050q-bio.PEcond-mat.dis-nncond-mat.stat-mech
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具有猝灭不确定性和内噪声的非线性死亡过程

Birth-death processes with quenched uncertainty and intrinsic noise

Tobias Galla

摘要:

种群的动态经常受到内在噪声的影响。同时,未知的相互作用网络或速率常数可以呈现淬灭的不确定性。现有的方法通常涉及对淬灭的紊乱进行重复采样,然后在这些样本上运行随机出生-死亡动力学。在本文中,我们采取了不同的观点,并制定了一个有效的跳跃过程,淬火相互作用作为一个整体的合奏代表。以具有随机支付矩阵的进化博弈为例,我们开发了一个算法来模拟这个过程,并讨论了弱内在噪声极限下的扩散近似。

英文摘要:

The dynamics of populations is frequently subject to intrinsic noise. At the same time unknown interaction networks or rate constants can present quenched uncertainty. Existing approaches often involve repeated sampling of the quenched disorder and then running the stochastic birth-death dynamics on these samples. In this paper we take a different view, and formulate an effective jump process, representative of the ensemble of quenched interactions as a whole. Using evolutionary games with random payoff matrices as an example, we develop an algorithm to simulate this process, and we discuss diffusion approximations in the limit of weak intrinsic noise.

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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