从贝尔曼-哈里斯过程中的波动估计生命周期分布
Jules Olayé1, Hala Bouzidi2, Andrey Aristov3,4
1CMAP, INRIA, École Polytechnique, Institut Polytechnique de Paris, 91120, Palaiseau, France. jules.olaye@polytechnique.edu.
Journal of mathematical biology
|May 6, 2025
概括
这项研究估计了贝尔曼-哈里斯分支过程的参数,这对于理解细胞分裂等人口增长至关重要. 该方法可以从人口数据中准确地确定单细胞参数,而无需单个追踪.
科学领域:
- 数学生物学 数学生物学
- 随机过程 随机过程
- 人口动态 人口动态
背景情况:
- 没有相互作用的人口增长通常是通过分支过程来建模的.
- 贝尔曼-哈里斯过程描述了随机生命周期被随机后代所取代的个体.
- 估计参数,如细胞分裂时间,至关重要,但由于过程复杂性而具有挑战性.
研究的目的:
- 开发一种方法来估计贝尔曼-哈里斯分支过程中的参数.
- 专注于生命周期和二进制繁殖的马分布,将生命周期的平均值与人口增长率联系起来.
- 为了应对从固定时间人口观测中估计生命周期变异性的挑战.
主要方法:
- 利用关于非马科夫分支过程中的波动的先进结果.
- 描述和区分两个时间非对称的制度.
- 使用这些非对称模式估计模型参数.
主要成果:
- 本文介绍了一种新的方法,用于从时间解析的人口测量中估计单细胞参数.
- 该方法不需要跟踪单个细胞或了解初始条件.
- 通过模拟和生物数据的验证证实了该方法的有效性.
结论:
- 开发的方法准确地估计了分支过程的关键参数,适用于细胞分裂动态.
- 它提供了一个强大的工具,用于从总数据分析人口增长.
- 该方法可扩展到更一般的分支过程模型.
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