用社会基础设施韧性预测城市扰动后个人出行变化
Learning Individual Movement Shifts After Urban Disruptions with Social Infrastructure Reliance
- 引入个体社会基础设施韧性(SIR)作为关键特征,结合空间上下文建模
- 模型在扰动后个体移动模式预测上准确率显著提升
- 适合城市规划、应急管理等需精准预判人群行为的场景
城市扰动后个体出行模式的变化能反映社区资源需求的变化。然而,预先预测这些变化仍面临挑战:首先,缺乏对个体社会基础设施韧性(SIR)的度量,而这一因素直接影响出行模式,且常用特征如社会人口学数据常难以大规模获取;其次,个体出行模式与空间环境之间的复杂交互尚未被充分捕捉;第三,个体层面的出行数据往往空间稀疏,不适用于传统决策方法。本研究将个体SIR纳入条件化深度学习模型,利用大规模稀疏的个体级数据,捕捉出行模式与局部空间背景间的复杂关系。实验表明,融合个体SIR与空间上下文可显著提升模型对扰动后出行模式的预测能力。该模型能够识别出在扰动前行为相似但SIR不同的个体所表现出的差异化出行转移。
原文摘要 · Abstract (English)
Shifts in individual movement patterns following disruptive events can reveal changing demands for community resources. However, predicting such shifts before disruptive events remains challenging for several reasons. First, measures are lacking for individuals' heterogeneous social infrastructure resilience (SIR), which directly influences their movement patterns, and commonly used features are often limited or unavailable at scale, e.g., sociodemographic characteristics. Second, the complex interactions between individual movement patterns and spatial contexts have not been sufficiently captured. Third, individual-level movement may be spatially sparse and not well-suited to traditional decision-making methods for movement predictions. This study incorporates individuals' SIR into a conditioned deep learning model to capture the complex relationships between individual movement patterns and local spatial context using large-scale, sparse individual-level data. Our experiments demonstrate that incorporating individuals' SIR and spatial context can enhance the model's ability to predict post-event individual movement patterns. The conditioned model can capture the divergent shifts in movement patterns among individuals who exhibit similar pre-event patterns but differ in SIR.
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