References of "Jensen, Pablo"
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See detailExploring the polycentric city with multi-worker households: An agent-based microeconomic model
Lemoy, Rémi UL; Raux, Charles; Jensen, Pablo

in Computers, Environment & Urban Systems (2017), 62

We propose an agent-based dynamics which leads an urban system to the standard equilibrium of the Alonso, Muth, Mills (AMM) framework. Starting for instance from a random initialization, agents move and ... [more ▼]

We propose an agent-based dynamics which leads an urban system to the standard equilibrium of the Alonso, Muth, Mills (AMM) framework. Starting for instance from a random initialization, agents move and bid for land, performing a kind of local search and finally leading the system to equilibrium rent, density and land use. Agreement with continuous analytical results is limited only by the discreteness of simulations. We then study polycentrism in cities with this tool. Two job centers are introduced, and the economic, social and environmental outcomes of various polycentric spatial structures are presented. We also introduce two-worker households whose partners may work in different job centers. When various two-worker households are mixed, polycentrism is desirable, as long as the centers are not too distant from each other. The environmental outcome is also positive, but housing surfaces.increase. (C) 2016 Elsevier Ltd. All rights reserved. [less ▲]

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See detailWhere in cities do "rich" and "poor" people live? The urban economics model revisited
Lemoy, Rémi UL; Raux, Charles; Jensen, Pablo

E-print/Working paper (2016)

In this work, we exploit the power of the Alonso-Mills-Muth (AMM) urban economics model and show that various utility functions and plausible conditions offer alternative explanations of house- holds’ ... [more ▼]

In this work, we exploit the power of the Alonso-Mills-Muth (AMM) urban economics model and show that various utility functions and plausible conditions offer alternative explanations of house- holds’ location by income within a city. These include the existence of a “rich” center and more complex socio-spatial urban forms, for instance alternating a rich center, poor suburbs and a rich outer ring, which have not yet been derived from the AMM model to our knowledge. In doing so we combine analytical ideas and illustrations by the means of an agent-based model. The hypothesis of a central or non-central amenity is also studied, leading to different insights on the issue. [less ▲]

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See detailExplorer la ville polycentrique avec un modèle multi-agents
Lemoy, Rémi UL; Raux, Charles; Jensen, Pablo

in Hégron, G.; Prévost, T. (Eds.) La modélisation de la ville : de la représentation au projet (2012)

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See detailSocio-economic utility and chemical potential
Lemoy, Rémi UL; Bertin, Eric; Jensen, Pablo

in Europhysics Letters (2011), 93(3), 38002-6

In statistical physics, the conservation of particle number results in the equalization of the chemical potential throughout a system at equilibrium. In contrast, the homogeneity of utility in socio ... [more ▼]

In statistical physics, the conservation of particle number results in the equalization of the chemical potential throughout a system at equilibrium. In contrast, the homogeneity of utility in socio-economic models is usually thought to rely on the competition between individuals, leading to Nash equilibrium. We show that both views can be reconciled by introducing a notion of chemical potential in a wide class of socio-economic models, and by relating it in a direct way to the equilibrium value of the utility. This approach also allows the dependence of utility across the system to be determined when agents take decisions in a probabilistic way. Numerical simulations of a urban economic model also suggest that our result is valid beyond the initially considered class of solvable models. Copyright (C) EPLA, 2011 [less ▲]

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See detailUn modèle multi-agents de structuration sociale de la ville
Lemoy, Rémi UL; Raux, Charles; Jensen, Pablo

in Antoni, Jean-Philippe (Ed.) Modéliser la ville. Forme urbaine et politiques de transport (2010)

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See detailAn agent-based model of residential patterns and social structure in urban areas.
Lemoy, Rémi UL; Raux, Charles; Jensen, Pablo

in Cybergeo : Revue Européenne de Géographie = Cybergeo - European Journal of Geography (2010)

The standard Urban Economics model (Alonso, Muth, Mills) describes analytically an equilibrium of household location in urban areas. We build an agent-based model able to reach this equilibrium in a ... [more ▼]

The standard Urban Economics model (Alonso, Muth, Mills) describes analytically an equilibrium of household location in urban areas. We build an agent-based model able to reach this equilibrium in a dynamic way. This allows us to simulate the development of a city by a combination of heterogeneous agents (based on income and preferences for the amenities), transport time cost and amenities locations. We explore the conditions under which non-trivial residential patterns and urban social structure can be obtained. [less ▲]

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See detailCompetition between collective and individual dynamics
Grauwin, Sebastian; Bertin, Eric; Lemoy, Rémi UL et al

in PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2009), 106(49), 20622-20626

Linking microscopic and macroscopic behavior is at the heart of many natural and social sciences. This apparent similarity conceals essential differences across disciplines: Although physical particles ... [more ▼]

Linking microscopic and macroscopic behavior is at the heart of many natural and social sciences. This apparent similarity conceals essential differences across disciplines: Although physical particles are assumed to optimize the global energy, economic agents maximize their own utility. Here, we solve exactly a Schelling-like segregation model, which interpolates continuously between cooperative and individual dynamics. We show that increasing the degree of cooperativity induces a qualitative transition from a segregated phase of low utility toward a mixed phase of high utility. By introducing a simple function that links the individual and global levels, we pave the way to a rigorous approach of a wide class of systems, where dynamics are governed by individual strategies. [less ▲]

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