Sources Taxi Traces POIs Residential Communities Scoring Vibrancy Value Ranking Ground Truth Label Assignment Ranking Model Pointwise Rankers Pairwise Rankers Model Traning

Vibrant residential communities are defined as places with permeability, vitality, variety, accessibility, identity and legibility. Developing vibrant communities can help boost commercial activities, enhance public security, foster social interaction, and thus yield livable, sustainable, and viable environments. However, it is challenging to understand the underlying drivers of vibrant communities to make them traceable and predictable. Toward this goal, we study the problem of ranking vibrant communities using human mobility data and point-ofinterests (POIs) data. We analyze large-scale urban and mobile data related to residential communities and find that in order to effectively identify vibrant communities, we should not just consider community “contents” such as buildings, facilities, and transportation, but also take into account the spatial structure. The spatial structure of a community refers to how the geographical items (POIs, road networks, public transits, etc.) of a community are spatially arranged and interact with one another. Along this line, we first develop a geographical learning method to find proper representations of communities. In addition, we propose a novel geographic ensemble ranking strategy, which aggregates a variety of weak rankers to effectively spot vibrant communities. Finally, we conduct a comprehensive evaluation with real-world residential community data. The experimental results demonstrate the effectiveness of the proposed method.

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