将图形信息纳入贝叶斯因子分析中,并具有强大的和可适应的收缩先验
Qiyiwen Zhang1, Changgee Chang2, Li Shen1
1Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, United States.
这项研究引入了一种新的贝叶斯因子模型,该模型整合了生物网络信息,以改进多omics数据分析. 该模型通过自适应缩小基因网络来增强尺寸缩小和特征工程,以更准确地恢复结构.
科学领域:
- 计算生物学 计算生物学
- 生物信息学是一种生物信息学.
- 统计遗传学 统计遗传学
背景情况:
- 高维的多维数据分析从低级和稀疏的矩阵分解中受益.
- 贝叶斯系数模型通过稀疏性诱导先验提供维度缩小.
- 现有的模型很难有效地整合生物图形信息.
研究的目的:
- 开发一个贝叶斯系因子模型,将生物图知识纳入协作基因功能识别.
- 通过适应性缩小基因网络来提高因子负载结构恢复的准确性.
- 为了增强对杂图边的稳定性,并处理各种数据类型.
主要方法:
- 提出了一个贝叶斯式因子模型,具有新的等级先验.
- 嵌入生物图形信息以识别协作功能基因组.
- 实现了与图形结构相关的因子负载的自适应收缩.
- 开发了克服阶段过渡现象的先验方法.
主要成果:
- 与现有方法相比,实现了更准确的因子负载的结构回收.
- 证明了对杂的图形边缘的稳定性与真正的稀疏性不一致.
- 成功处理连续和离散的多omics数据类型.
- 在模拟和真实数据中超越了一些现有的因子分析方法.
结论:
- 拟议的贝叶斯因子模型有效地整合了生物网络信息,以进行增强的多omics数据分析.
- 新的层次先验可以改善因子负载恢复和对杂图形数据的稳定性.
- 该模型为不同数据类型的尺寸缩小和特征工程提供了一种多功能方法.
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