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arXiv 1607.07083stat.MEstat.AP
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多元空间点过程的图形模拟

Graphical modelling of multivariate spatial point processes

Matthias Eckardt

摘要:

本文提出了一种新的图形模型,称为空间依赖图模型,它捕捉了不同的事件,在空间中随机发生的全局依赖结构。在空间依赖图模型中,利用条件部分谱相干性识别边缘集。因此,节点与多元空间点过程的分量相关,而边表示单个分量之间的正交关系。本文介绍了一种有效的方法对高度结构化和高维空间点过程的模式分析。与以前的所有方法不同,我们的新模型允许同时分析所有多变量条件相关性。我们的新技术,调查多元结构关系的潜力说明使用数据林以及每月的数据在伦敦金融城的犯罪。

英文摘要:

This paper proposes a novel graphical model, termed the spatial dependence graph model, which captures the global dependence structure of different events that occur randomly in space. In the spatial dependence graph model, the edge set is identified by using the conditional partial spectral coherence. Thereby, nodes are related to the components of a multivariate spatial point process and edges express orthogonality relation between the single components. This paper introduces an efficient approach towards pattern analysis of highly structured and high dimensional spatial point processes. Unlike all previous methods, our new model permits the simultaneous analysis of all multivariate conditional interrelations. The potential of our new technique to investigate multivariate structural relations is illustrated using data on forest stands in Lansing Woods as well as monthly data on crimes committed in the City of London.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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