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arXiv 1012.5343q-bio.PE
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通过小的适应度波动加速进化搜索

Speeding up evolutionary search by small fitness fluctuations

Jakub Otwinowski, Sorin Tanase-Nicola, Ilya Nemenman

摘要:

我们考虑一个固定大小的人口经历了进化适应弱mutuation率限制,我们模型作为一个有偏Langevin过程的基因型空间。我们分析和数值表明,如果适应度景观有一个小的高度上位性(粗糙)和随时间变化的组件,那么人口基因型表现出高效率的基因型空间中的扩散,并能够逃脱当地的适应度极小值的大概率。我们认为,我们的主要发现,即使是非常小的时间依赖性波动的健身可以大大加快进化是有效的广泛的一类模型。

英文摘要:

We consider a fixed size population that undergoes an evolutionary adaptation in the weak mutuation rate limit, which we model as a biased Langevin process in the genotype space. We show analytically and numerically that, if the fitness landscape has a small highly epistatic (rough) and time-varying component, then the population genotype exhibits a high effective diffusion in the genotype space and is able to escape local fitness minima with a large probability. We argue that our principal finding that even very small time-dependent fluctuations of fitness can substantially speed up evolution is valid for a wide class of models.

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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