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arXiv 2103.03538stat.MEstat.AP
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流网络的贝叶斯时空模型

Bayesian spatio-temporal models for stream networks

Edgar Santos-Fernandez, Jay M. Ver Hoef, Erin E. Peterson, James McGree, Daniel Isaak, Kerrie Mengersen

摘要:

时空模型在包括生态学在内的许多研究领域都有着广泛的应用。最近在溪流和河流中大量使用现场传感器,这支持了近实时的时空水质建模和监测。介绍了一种新的时空模型族。这些模型采用流距离的空间依赖性,而时间自相关捕获使用向量自回归方法。这些新模型的几个变化提出了使用贝叶斯框架。结果表明,我们提出的模型表现良好,使用从真实流网络收集的时空数据,特别是在样本外RMSPE。这说明考虑在美国西北部的水温数据的案例研究。

英文摘要:

Spatio-temporal models are widely used in many research areas including ecology. The recent proliferation of the use of in-situ sensors in streams and rivers supports space-time water quality modelling and monitoring in near real-time. A new family of spatio-temporal models is introduced. These models incorporate spatial dependence using stream distance while temporal autocorrelation is captured using vector autoregression approaches. Several variations of these novel models are proposed using a Bayesian framework. The results show that our proposed models perform well using spatio-temporal data collected from real stream networks, particularly in terms of out-of-sample RMSPE. This is illustrated considering a case study of water temperature data in the northwestern United States.

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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