人口与健康调查点位移对栅格分析的影响。

IF 1.1 Q3 DEMOGRAPHY

Spatial Demography Pub Date : 2016-07-01 Epub Date: 2015-06-23 DOI:10.1007/s40980-015-0013-1

Carolina Perez-Heydrich, Joshua L Warren, Clara R Burgert, Michael E Emch

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引用次数: 30

摘要

在本文中，我们探讨了在整合辅助光栅数据的研究中，研究结果对与人口与健康调查(DHS)数据相关的空间位移的敏感性。通过模拟研究，我们发现DHS点位移对基于栅格的分析的影响可以通过生成代表邻域缓冲区平均值的协变量来缓和。此外，发现栅格表面特征(即空间平滑度)会影响通过点位移引入的偏差程度。虽然简单的点提取在涉及光滑连续表面的分析中产生无偏估计，但不建议在涉及分类光栅表面的分析中使用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Influence of Demographic and Health Survey Point Displacements on Raster-Based Analyses.

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Influence of Demographic and Health Survey Point Displacements on Raster-Based Analyses.

With this paper we explore the sensitivity of study results to spatial displacements associated with Demographic and Health Survey (DHS) data in research that integrates ancillary raster data. Through simulation studies, we found that the impact of DHS point displacements on raster-based analyses can be moderated through the generation of covariates representing average values from neighborhood buffers. Additionally, raster surface characteristics (i.e., spatial smoothness) were found to affect the extent of bias introduced through point displacements. Although simple point extraction produced unbiased estimates in analyses involving smooth continuous surfaces, it is not recommended in analyses that involve categorical raster surfaces.

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来源期刊

Spatial Demography DEMOGRAPHY-

自引率

0.00%

发文量

期刊介绍： Spatial Demography focuses on understanding the spatial and spatiotemporal dimension of demographic processes. More specifically, the journal is interested in submissions that include the innovative use and adoption of spatial concepts, geospatial data, spatial technologies, and spatial analytic methods that further our understanding of demographic and policy-related related questions. The journal publishes both substantive and methodological papers from across the discipline of demography and its related fields (including economics, geography, sociology, anthropology, environmental science) and in applications ranging from local to global scale. In addition to research articles the journal will consider for publication review essays, book reviews, and reports/reviews on data, software, and instructional resources.