We consider the problem of estimating multiple related but distinct graphical
models on the basis of a high-dimensional data set with observations that
belong to distinct classes. A motivating example occurs in the analysis of gene
expression data for tissue samples with and without cancer. In this case, we
might wish to estimate a gene expression network fo
本文提出了一种基于稀疏差异先验的正则化 M - 估计方法,通过估计图和变化点结构相结合,探讨了多变量时序的时间变化精度矩阵的动态条件依赖结构,以及其应对于稀疏依赖结构或平滑演化图结构的需求。此外,方法的扩张能使得在多个系统的依赖关系中进行变化点的估计,并提出了一种高效算法用于对结构的估计,最后,对两个真实世界数据集的定性影响以及合理性进行研究。