首页> 外文期刊>Annals of the American Association of Geographers >Validating Population Estimates for Harmonized Census Tract Data, 2000-2010
【24h】

Validating Population Estimates for Harmonized Census Tract Data, 2000-2010

机译:验证统一人口普查课程的人口估计,2000-2010

获取原文
获取原文并翻译 | 示例
       

摘要

Social scientists regularly rely on population estimates when studying change in small areas over time. Census tract data in the United States are a prime example, as there are substantial shifts in tract boundaries from decade to decade. This study compares alternative estimates of the 2000 population living within 2010 tract boundaries to the Census Bureau's own retabulation. All methods of estimation are subject to error; this is the first study to directly quantify the error in alternative interpolation methods for U.S. census tracts. A simple areal weighting method closely approximates the estimates provided by one standard source (the Neighborhood Change Data Base), with some improvement provided by considering only area not covered by water. More information is used by the Longitudinal Tract Data Base (LTDB), which relies on a combination of areal and population interpolation as well as ancillary data about water-covered areas. Another set of estimates provided by the National Historical Geographic Information Systems (NHGIS) uses data about land cover in 2001 and the current road network and distribution of population and housing units at the block level. Areal weighting alone results in a large error in a substantial share of tracts that were divided in complex ways. The LTDB and NHGIS perform much better in all situations but are subject to some error when boundaries of both tracts and their component blocks are redrawn. Users of harmonized tract data should be watchful for potential problems in either of these data sources.
机译:社会科学家在研究小区随着时间的推移时定期依赖人口估计。美国人口普查道数据是一个主要的例子,因为十年到十年的道路界限存在大幅转变。本研究将2000人口居住在2010年普查局自身退缩的替代界限的替代估计数。所有估计方法都受到错误;这是第一项研究,可以直接量化美国人口普查尸体中替代插值方法的误差。一种简单的区域加权方法与一个标准源(邻域变化数据群)提供的估计非常近似,通过考虑不被水覆盖的区域提供了一些改进。纵向道数据库(LTDB)使用更多信息,依赖于区域和群体插值的组合以及有关水覆盖区域的辅助数据。国家历史地理信息系统(NHGIS)提供的另一套估计数在2001年使用有关陆地覆盖的数据以及当前道路网络以及块水平的人口和住房单位分配。单独的区域加权导致大量误差在以复杂的方式分开。有限公司和NHGIS在所有情况下表现得更好,但是当诸如派舍的边界和它们的组件块被重绘时受到一些错误。统一的道路数据的用户应该对这些数据来源中的任何一个都不应对潜在的问题。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号