Cities evolve over time and their evolution is often studied using material objects and historical documents. Based on available evidence, researchers propose various hypotheses explaining the probable evolution, both imaginary and factual. Furthermore, city models are used to model and visualize 3D structures and semantic information of the cities. With the help of versioning of city objects, it is possible to represent temporal changes of city structures. And with the support for representing scenarios, it is possible to represent different possible sequences of urban changes. In this article, we formalize a set of rules for representation of concurrent points of view of researchers related to urban changes based on standard city model. The goal is to understand how the cities have evolved, what were the key changes and allow exchange between various hypotheses (or processes). We developed a proof of concept named \({UrbanCo}^2{Fab}\) based on these rules to demonstrate the highly potential use cases of our proposition.

中文翻译：

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代表城市模型的城市变化的并发观点

城市随着时间的流逝而发展，通常使用物质对象和历史文献来研究城市的发展。基于现有证据，研究人员提出了各种假说，解释了假想和事实的可能演变。此外，城市模型用于建模和可视化城市的3D结构和语义信息。借助城市对象的版本控制，可以表示城市结构的时间变化。在表示场景的支持下，可以表示不同的城市变化序列。在本文中，我们基于标准城市模型形式化了一套规则，用于表示与城市变化相关的研究人员并发观点。目的是了解城市如何演变，什么是关键更改，并允许在各种假设（或过程）之间交换。我们开发了名为\（{UrbanCo} ^ 2 {Fab} \）基于这些规则，以证明我们的命题极具潜力的用例。