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Accueil du site > Séminaires > Archives soutenances > Soutenances 2015 > Soutenance de thèse : Claire Lagesse ; Vendredi 25 septembre 2015 à 14 heures, "Lire les lignes de la ville. Méthodologie de caractérisation des graphes spatiaux.".

PhD defence : Claire Lagesse ; Friday, September 25th, 2015 at 2pm, "Read Cities through their Lines Methodology to characterize spatial graphs"

Unless otherwise stated, seminars and defences take place at 11:30 in room 454A of Condorcet building.

PhD by Claire LAGESSE prepared under the supervision of Stéphane DOUADY and Patricia BORDIN (ESTP / LIED).

Defence on Friday, September 25th, 2015 at 2pm

Télécharger le manuscrit de thèse.

Location: Université Paris Diderot, Condorcet building, Room 454A on the 4th floor.

The defence will be followed by a buffet on the 6th floor.

Read Cities through their Lines Methodology to characterize spatial graphs

JPEG - 1.4 Mb


Cities can be seen as the epitome of complex systems. They arise from a set of interactions and components so diverse that is almost impossible to describe them exhaustively. Amid this diversity, we chose an object which orchestrates the development and use of an urban area: the road network. Following the established work on space syntax, we represent road networks as graphs. From this symbolic representation we can build a geographical object called the way. The way is defined by local rules independently from the direction in which the network is read. This complex object, and several indicators leaned upon it, allows us to carry out deep analysis of spatial networks, independent from their borders.

With this methodology, we demonstrate how different road graphs, from various places in the world, show similar properties. We show how such analysis, based on the topological and topographical properties of their road networks, allows us to trace back some aspects of the historical and geographical contexts of city formation. We define a model of temporal differentiation, where the structural changes through time in the network are highlighted.

This methodology was thought to be generic so it can be used with several kinds of spatial networks, opening the panel of research applications and future work.

Rapporteurs : Arnaud BANOS, Alain BARRAT.

Examinateurs : Claude GRASLAND, Jean-Loup GUILLAUME, Renaud LAMBIOTTE, Jacynthe POULIOT.

Key words: Road network, Graph theory, Spatial analysis, Complex system, Urban modelling.

Contact : Équipe séminaires / Seminar team - Published on / Publié le 7 September 2015

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