Les signatures d'auto-organisation dans les villes. Formes temporelles de regroupement et de croissance dans les réseaux de rues
The signature of self-organisation in cities. Temporal patterns of clustering and growth in street networks
Current research on urban growth is witnessing a division between understanding urban phenomenon as an end product of underlying processes and assumption-based computational modelling. To bridge the gap, there is a need to seek evidence that solidifies any assumptions made about growth dynamics. For this purpose, we attempt to outline invariants in the historical evolution of two urban structures; Manhattan and Barcelona. By modelling changes on the street elements and the clusters they form, we mark invariants that expose self-organisational patterns similar to those in reaction-diffusion dynamics. While it is difficult to verify the role of these invariants in the organised behaviour of urban complexity, their very presence marks one of the defining characteristics for urban pattern recognition.
urban growth, reaction-diffusion, space syntax, self-organisation, Kohonen networks, cities complexity