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首页> 外文期刊>EURASIP journal on bioinformatics and systems biology >Inference of Boolean Networks Using Sensitivity Regularization
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Inference of Boolean Networks Using Sensitivity Regularization

机译:使用敏感度正则化推断布尔网络

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摘要

The inference of genetic regulatory networks from global measurements of gene expressions is an important problem in computational biology. Recent studies suggest that such dynamical molecular systems are poised at a critical phase transition between an ordered and a disordered phase, affording the ability to balance stability and adaptability while coordinating complex macroscopic behavior. We investigate whether incorporating this dynamical system-wide property as an assumption in the inference process is beneficial in terms of reducing the inference error of the designed network. Using Boolean networks, for which there are well-defined notions of ordered, critical, and chaotic dynamical regimes as well as well-studied inference procedures, we analyze the expected inference error relative to deviations in the networks' dynamical regimes from the assumption of criticality. We demonstrate that taking criticality into account via a penalty term in the inference procedure improves the accuracy of prediction both in terms of state transitions and network wiring, particularly for small sample sizes.
机译:从基因表达的整体测量推论遗传调控网络是计算生物学中的一个重要问题。最近的研究表明,这种动态分子系统处于有序相和无序相之间的关键相变处,在协调复杂的宏观行为的同时提供了平衡稳定性和适应性的能力。我们研究将这种动态的系统范围内的特性作为假设纳入推理过程是否对降低设计网络的推理误差有益。使用布尔网络,对于布尔网络有明确定义的有序,临界和混沌动力学状态的概念,以及经过精心研究的推理程序,我们从临界的假设出发,分析了与网络动力学状态偏差有关的预期推理误差。我们证明,在推理过程中通过惩罚项考虑临界性可以提高状态转换和网络布线方面的预测准确性,特别是对于小样本量。

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