City limits in the age of smartphones and urban scaling
Computers, Environment and Urban Systems（2020）
摘要
•We still lack a common definition of urban boundaries.•Trajectories estimated from smart phones provide a ranking of place visitations.•Centrality ranking allows to define potential boundaries from a functional perspective.•Proposed boundaries are evaluated through the scaling of voice interactions to delineate city limits.
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关键词
City boundaries definition,Spectral network analysis,Urban informatics,Social computing,Scaling laws,Complex systems,Big data
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