Kang Chaogui, Liu Yu, Guo Diansheng, Qin Kun
School of Remote Sensing and Information Engineering, Wuhan University, Wuhan, Hubei, China.
Institute of Remote Sensing and Geographical Information Systems, Peking University, Beijing, China.
PLoS One. 2015 Nov 24;10(11):e0143500. doi: 10.1371/journal.pone.0143500. eCollection 2015.
We generalized the recently introduced "radiation model", as an analog to the generalization of the classic "gravity model", to consolidate its nature of universality for modeling diverse mobility systems. By imposing the appropriate scaling exponent λ, normalization factor κ and system constraints including searching direction and trip OD constraint, the generalized radiation model accurately captures real human movements in various scenarios and spatial scales, including two different countries and four different cities. Our analytical results also indicated that the generalized radiation model outperformed alternative mobility models in various empirical analyses.
我们推广了最近引入的“辐射模型”，作为经典“引力模型”推广的一种类比，以巩固其对各种移动性系统进行建模的通用性。通过施加适当的缩放指数λ、归一化因子κ以及包括搜索方向和出行起止点约束在内的系统约束，广义辐射模型准确地捕捉了各种场景和空间尺度下的真实人类移动情况，包括两个不同的国家和四个不同的城市。我们的分析结果还表明，在各种实证分析中，广义辐射模型优于其他移动性模型。
