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分类依据与纠错

AI 根据所提供的论文材料归类:摘要明确讨论网络拓扑识别,以及结构方程和向量自回归对动态网络过程的建模。

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正在核对关联版本…

代码、数据与补充材料

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关注这篇论文的作者
Gonzalo Mateos
Yanning Shen
Ananthram Swami

图上的拓扑识别与推断

研究问题
如何从多维关系数据识别图的连接结构,并刻画节点间方向性、动态性及非线性依赖,是本章综述的核心问题。
方法与思路
作者综述相关指标、协方差选择、核字典、结构方程和向量自回归,并讨论利用稀疏、低秩等属性建模。
材料陈述的贡献
摘要称,本章串联图拓扑识别与统计推断方法,讨论批量及在线学习、张量表示和高阶统计信息的利用。
阅读关注点
应核对方向性联系何时具有因果解释,各模型如何识别拓扑,以及在线算法收敛保证所需的具体条件。
阅读边界
这是 arXiv 预印本,同行评审或期刊接收未获核实;摘要未说明具体识别条件,方向性关系不能直接视为因果。

原文摘要

Topology identification and inference of processes evolving over graphs arise in timely applications involving brain, transportation, financial, power, as well as social and information networks. This chapter provides an overview of graph topology identification and statistical inference methods for multidimensional relational data. Approaches for undirected links connecting graph nodes are outlined, going all the way from correlation metrics to covariance selection, and revealing ties with smooth signal priors. To account for directional (possibly causal) relations among nodal variables and address the limitations of linear time-invariant models in handling dynamic as well as nonlinear dependencies, a principled framework is surveyed to capture these complexities through judiciously selected kernels from a prescribed dictionary. Generalizations are also described via structural equations and vector autoregressions that can exploit attributes such as low rank, sparsity, acyclicity, and smoothness to model dynamic processes over possibly time-evolving topologies. It is argued that this approach supports both batch and online learning algorithms with convergence rate guarantees, is amenable to tensor (that is, multi-way array) formulations as well as decompositions that are well-suited for multidimensional network data, and can seamlessly leverage high-order statistical information.

笔记与分组
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