Efficient solution of an inverse problem in cell population dynamics

Efficient solution of an inverse problem in cell population dynamics
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细胞群动力学反问题的有效解决

DOI:
10.1088/0266-5611/27/6/065009
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发表时间:
2011
期刊:
影响因子:
2.1
通讯作者:
M. Wagner
M. Wagner
中科院分区:
数学2区
文献类型:
--
作者:
A. Groh;J. Krebs;M. Wagner

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在本文中,一个大小结构的细胞分裂模型进行检查和确定的分裂(出生)率从一个可测量的稳定的人口规模分布的问题得到解决。这个反问题可以用微分膨胀方程来表示。我们提出了一种新的解决方案的基础上软化。近似逆的方法允许我们将来自数据的导数移动到可预先计算的重建核。为了包含所有可用的先验信息,在再生核希尔伯特空间中引入基于回归的预平滑步骤。我们建立了一个新的算法的误差理论,证明了收敛性,并推导出一个参数策略。结果证实了广泛的数值试验的人工和真实的数据的基础上增殖的肿瘤细胞。
In this paper, a size-structured model for cell division is examined and the question of determining the division (birth) rate from a measurable stable size distribution of the population is addressed. This inverse problem can be formulated as a differential-dilation equation. We propose a novel solution scheme based on mollification. The method of approximate inverse allows us to shift the derivative from the data to a precomputable reconstruction kernel. To comprise all available a priori information, a presmoothing step based on regression in reproducing kernel Hilbert spaces is introduced. We establish an error theory for the emerging algorithm, prove convergence and deduce a parameter strategy. The results are substantiated with extensive numerical tests both for artificial and real data based on proliferating tumor cells.
DOI: 10.1158/0008-5472.can-09-4228
发表时间: 2010-05-15
期刊: Cancer research
影响因子: 11.2
作者:
Schaffer BE;Park KS;Yiu G;Conklin JF;Lin C;Burkhart DL;Karnezis AN;Sweet-Cordero EA;Sage J
通讯作者: Sage J