#5160. An extended spatiotemporal exposure index for urban racial segregation

August 2026publication date
Proposal available till 07-06-2025
4 total number of authors per manuscript0 $

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Journal’s subject area:
Geography, Planning and Development;
Civil and Structural Engineering;
Management of Technology and Innovation;
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More details about the manuscript: Science Citation Index Expanded or/and Social Sciences Citation Index
Abstract:
The Segregation Index quantifies the degree of segregation of social groups or classes. We add population flow to the conventional place-based spatial exposure index to identify spatiotemporal segregation changes. Specifically, we considered the population-flow network, hierarchical structure, and time. We first used the time-dependent Twitter Origin-Destination flow matrices and their hierarchical structure information to estimate interactions between areal units at the neighborhood level. Finally, we systematically compared their differences with the conventional indices at global and local scales to see how population-flow patterns affect the exposure index. The results show that the population-flow patterns reflect valuable information in neighborhood interactions in temporal and spatial dimensions, but it is missing information in the conventional segregation computations. Furthermore, we emphasize that the hierarchical structures of flow patterns and the choice of appropriate parameters are also important factors for a rational segregation evaluation.
Keywords:
Flow network; hierarchical structure; residential segregation; spatiotemporal activity and trajectory data; Spatiotemporal exposure index

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