Ethnic and socioeconomic segregation levels vary over time and so do the spatial levels of these segregations. Although a large body of research has focused on how residential mobility patterns produce segregation, little is known about how changing mobility patterns translate into temporal and scale variations in sorting. This article develops a methodological framework designed to explore how changing mobility patterns reflect such trends. It introduces a measure of sorting that reflects the extent of disparities among groups in their socio-spatial mobility. Trends in the direction and the extent of sorting can be exposed by computing sorting measures over consecutive periods. The measure is broken down to capture the relative contributions of residential mobility to sorting at hierarchically nested geographical units, for example cities and their constituent neighbourhoods. An empirical demonstration shows that changes in residential mobility patterns affect the magnitude and spatial level of residential sorting, which vary even over the short term.
种族和社会经济隔离水平随着时间的推移而变化，这些隔离的空间水平也是如此。虽然大量的研究都集中在居住流动模式如何产生隔离，但对于流动模式的变化如何转化为分类的时间和规模变化知之甚少。本文开发了一个方法框架，旨在探索不断变化的流动模式如何反映这些趋势。它引入了一种分类指标，反映了群体在社会空间流动方面的差异程度。通过计算连续时期的分类指标，可以暴露出分类方向和程度的趋势。该指标被分解以捕获居住流动性对分层嵌套地理单元（例如城市及其组成街区）的分类的相对贡献。实证证明，居住流动模式的变化会影响居住分类的规模和空间水平，即使在短期内也会出现不同。.
Keywords: residential mobility; residential sorting; segregation; socio-spatial mobility; sorting trends; spatial level.