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arXiv 1906.07798stat.MEstat.AP
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多变量空间混合过程的空间依赖图模型

A spatial dependence graph model for multivariate spatial hybrid processes

Matthias Eckardt, Jorge Mateu

摘要:

本文讨论了多元混合型空间数据的联合分析问题,其中部分数据是点过程,部分数据是格型数据。在对标记空间点和格点过程的统计方法进行调查之后,定义了多变量空间混合过程类,并将其嵌入到空间依赖图模型的框架中。在这个模型中,点和格子子过程被标识为图的节点,而缺失的边表示组件之间的条件独立性。这最终导致了一个通用的框架,任何类型的空间数据在多元设置。我们展示了我们的方法在分析的多变量点格模式的犯罪和救护车服务呼叫在伦敦记录的事件,其中的点是不同的预分类的犯罪事件和网格组件的位置报告不同的聚集事件率在病房一级。

英文摘要:

This paper is concerned with the joint analysis of multivariate mixed-type spatial data, where some components are point processes and some are of lattice-type by nature. After a survey of statistical methods for marked spatial point and lattice processes, the class of multivariate spatial hybrid processes is defined and embedded within the framework of spatial dependence graph models. In this model, the point and lattice sub-processes are identified with nodes of a graph whereas missing edges represent conditional independence among the components. This finally leads to a general framework for any type of spatial data in a multivariate setting. We demonstrate the application of our method in the analysis of a multivariate point-lattice pattern on crime and ambulance service call-out incidents recorded in London, where the points are the locations of different pre-classified crime events and the lattice components report different aggregated incident rates at ward level.

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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