论文标题
基于创新扩散的城市进化模型
A model of urban evolution based on innovation diffusion
论文作者
论文摘要
从进化的角度可以理解城市系统的动态，从某种意义上说，可以扩展生物学和文化进化。然而，实施基本进化过程的城市系统模型仍有待研究。我们在这里提出了这样的城市动力学模型，以宏观量表进行这种模型，其中，城市之间的创新扩散捕获了转换过程（突变）和传输过程（扩散），使用两个耦合的空间相互作用模型。该模型对城市合成系统的探索表明，空间相互作用和创新扩散范围在多样性和效用的衡量标准以及中间范围的存在中产生了最佳效用。多目标优化显示了该模型如何产生效用与多样性之间的折衷。该模型为更详细的城市进化形式化铺平了道路。
The dynamics of urban systems can be understood from an evolutionary perspective, in some sense extending biological and cultural evolution. Models for systems of cities implementing elementary evolutionary processes remain however to be investigated. We propose here such a model for urban dynamics at the macroscopic scale, in which the diffusion of innovations between cities captures transformation processes (mutations) and transmission processes (diffusion), using two coupled spatial interaction models. Explorations of the model on synthetic systems of cities show the role of spatial interaction and innovation diffusion ranges on measures of diversity and utility, and the existence of intermediate ranges yielding an optimal utility. Multi-objective optimization shows how the model produces a compromise between utility and diversity. This model paves the way towards more elaborated formalizations of urban evolution.
