用二进制空间对动态网络的状态和参数估计进行贝叶斯优化
1Department of Electrical and Computer Engineering at Northeastern University.
概括
本研究介绍了一种无梯度的方法,用于估计复杂布尔动态系统中的参数和状态. 该方法使用高斯过程和贝叶斯优化,证明对基因调节网络分析有效.
科学领域:
- 计算生物学 计算生物学
- 系统生物学 系统生物学
- 网络科学 网络科学
背景情况:
- 部分观察布尔动态系统 (POBDS) 模型具有二进制状态的复杂网络.
- 现有的参数估计方法通常是昂贵的基于梯度的计算技术,限制了可扩展性.
研究的目的:
- 开发一种计算效率高,无梯度的方法,用于POBDS中的联合状态和参数估计.
- 解决目前大规模网络分析方法的局限性.
主要方法:
- 利用高斯过程来建模日志概率函数.
- 采用贝叶斯优化来实现高效的参数空间搜索.
- 集成了布尔和卡尔曼波器,用于联合状态估计.
主要成果:
- 证明了拟议的无梯度方法的可扩展性和有效性.
- 通过合成基因表达数据,成功地将该方法应用于基因调节网络.
- 实现了模型参数和基因状态的准确联合估计.
结论:
- 拟议的方法为POBDS提供了基于梯度的技术的可行和高效的替代方案.
- 这种方法增强了复杂生物网络的分析,特别是基因调节网络.
- 在大型系统中方便可靠的状态和参数估计.
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