Deffuant Guillaume
Head of LISC and of research theme MOTIVE. Social simulation, empathy, machine learning, viability and resilience algorithms.
My research interests are in modelling complex systems (social or ecological dynamics) and assessing their properties such as their viability or resilience. I have a long lasting more personal interest in cognitive sciences and more particularly in the concept of empathy. I did my PhD in cognitive sciences (EHESS - Paris VI University) and I got my Habilitation from Clermont University (topic: modelling complex systems). Administrative status: DR1.
Recent projects:
PATRES (2007-2010).
PRIMA (2008-2011).
DISCO (2010-2013).
RESUS (2015-2016)
From June 2010 to June 2014, I have been co-director of the French network for complex systems (Réseau National des Systèmes Complexes).
The book I edited with Nigel Gilbert from the Patres project: Viability and Resilience of Complex Systems: more info.
Recent publications
Journal Articles (53)
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Models of social influence: towards the next frontiers
JASSS-The Journal of Artificial Societies and Social Simulation 20 (4(2)), 2017closeclose -
Non-equilibrium plant metapopulation dynamics challenge the concept of ancient/recent forest species
Ecological Modelling 366, 2017closeclose -
An energy-like indicator to assess opinion resilience
Physica A-Statistical Mechanics and its Applications 473, 2017closeclose -
Accelerating viability kernel computation with CUDA architecture: application to bycatch fishery management
Computational Management Science 13 (3), 2016closeclose -
Computing the reliability kernel of a time-variant system: Application to a corroded beam
IFAC-PapersOnLine 49 (12), Elsevier B.V., 2016closeclose -
Predicting stochastic community dynamics in grasslands under the assumption of competitive symmetry
Journal of Theoretical Biology 399, 2016closeclose -
Bounded confidence model with fixed uncertainties and extremists: The opinions can keep fluctuating indefinitely
JASSS-The Journal of Artificial Societies and Social Simulation 19 (1), 2016closeclose -
Visions de la complexité. Le démon de Laplace dans tous ses états
Natures Sciences Sociétés 23 (1), 2015closeclose -
The Combined Use of Correlative and Mechanistic Species Distribution Models Benefits Low Conservation Status Species
PLoS One 10 (10), 2015closeclose -
Vulnerability: from the conceptual to the operational using a dynamical system perspective
Environmental Modelling & Software 73, 2015close -
Explaining ontogenetic shifts in root-shoot scaling with transient dynamics
Annals of Botany 114, 2014closeclose -
The GR3D model, a tool to explore the Global Repositioning Dynamicsof Diadromous fish Distribution
Ecological Modelling 283, 2014closeclose -
Relevance of control theory to design and maintenance problems in time-variant reliability: The case of stochastic viability
Reliability Engineering & System Safety 132, 2014closeclose -
The results of Meadows and Cliff are wrong because they compute indicator y before model convergence
JASSS-The Journal of Artificial Societies and Social Simulation 16 (1), 2013closeclose -
The Leviathan Model: Absolute dominance, generalised distrust, small worlds and other patterns emerging from combining vanity with opinion propagation
JASSS-The Journal of Artificial Societies and Social Simulation 16 (1), 2013closeclose -
Homogenization of Pseudomonas aeruginosa PAO1 biofilms from high-resolution visualization by freeze substitution
(p. 1405-1418), Biotechnology and Bioengineering 110 (5), 2013closeclose -
Generating a synthetic population of individuals in households: sample-free vs sample-based methods
JASSS-The Journal of Artificial Societies and Social Simulation 16 (1), 2013closeclose -
Adaptive approximate Bayesian computation for complex models
Computational Statistics 28 (6), 2013closeclose -
Semi-automatic design of spatial data cubes from simulation model results
International Journal of Data Warehousing and Mining 9 (1), 2013closeclose -
Extending the viability theory framework of resilience to uncertain dynamics, and application to lake eutrophication
Ecological Indicators 29, 2013closeclose -
Manifesto of computational social science
European Physical Journal-Special Topics 214, 2012closeclose -
Data and models for exploring sustainability of human well-being in global environmental change
European Physical Journal-Special Topics 214 (1), 2012closeclose -
Influence of the spatial structure on the effective nutrient diffusion in bacterial biofilm
Journal of Biological Physics 38 (4), 2012closeclose -
Deriving the number of jobs in proximity services from the number of inhabitants in french rural municipalities
PLoS One 7 (7), 2012closeclose -
A universal model of commuting networks
PLoS One 7 (10), 2012closeclose -
Analyzing demographic and economic simulation model results: a semi-automatic spatial OLAP approach
Lecture Notes in Computer Science 6782, 2011closeclose -
Viability and resilience of languages in competition
PLoS One 5 (1 (e8681)), 2010closeclose -
SimExplorer: programming experimental design on models and managing quality of modelling process
International Journal of Agricultural and Environmental Information Systems IJAEIS 1 (1), 2010closeclose -
Collective increase of first impression bias
Complexity 15 (5), 2010closeclose -
An iterative approach for generating statistically realistic populations of households
PLoS One 5 (1), 2010closeclose -
Openness leads to opinion stability and narrowness to volatility
Advances in Complex Systems 13 (3), 2010closeclose -
Bacteria can form interconnected microcolonies when a self-excreted product reduces their surface motility: evidence from individual-based model simulations
Theory in Biosciences 129 (1), 2010closeclose -
A multidimensional model for data warehouses of simulation results
International Journal of Agricultural and Environmental Information Systems IJAEIS 1 (2), 2010closeclose -
Defining yield policies in a viability approach
Ecological Modelling 212 (1-2), 2008closeclose -
Differential equation models derived from an individual-based model can help to understand emergent effects
JASSS-The Journal of Artificial Societies and Social Simulation 11 (2), 2008closeclose -
Rejection mechanism in 2D bounded confidence provides more conformity
Advances in Complex Systems 11 (4), 2008closeclose -
Propagation effects of filtering incongruent information
Journal of Business Research 60 (8), 2007closeclose -
Approximating viability kernels with support vector machines
IEEE Transactions on Automatic Control 52 (5), 2007closeclose -
Taking into account the variations of neighbourhood sizes in the mean-field approximation of the threshold model on a random network
JASSS-The Journal of Artificial Societies and Social Simulation 10 (1), 2007closeclose -
Dialogues concerning a (possibly) new science
JASSS-The Journal of Artificial Societies and Social Simulation 9 (1), 2006closeclose -
Comparing extremism propagation patterns in continuous opinion models
JASSS-The Journal of Artificial Societies and Social Simulation 9 (3), 2006closeclose -
An individual-based model of innovation diffusion mixing social influence and rational anticipation
American Journal of Sociology 110 (4), 2005closeclose -
Gestion des territoires : aider à la formulation collective des problèmes
Natures Sciences Sociétés 13 (1), 2005closeclose -
Persuasion dynamics
Physica A-Statistical Mechanics and its Applications 353, 2005closeclose -
The role of network topology on extremism propagation with the relative agreement opinion
Physica A-Statistical Mechanics and its Applications 343, 2004closeclose -
Simple is beautiful... and necessary
JASSS-The Journal of Artificial Societies and Social Simulation 6 (1), 2003closeclose -
Comparing an individual-based model of behaviour diffusion with its mean field aggregate approximation.
JASSS-The Journal of Artificial Societies and Social Simulation 6 (4), 2003closeclose -
How can extremism prevail? A study based on the relative agreement model
JASSS-The Journal of Artificial Societies and Social Simulation 5 (4), 2002closeclose -
Meet, discuss and segregate !
Complexity 7 (3), 2002closeclose -
Interacting Agents and Continuous Opinions Dynamics
Lecture Notes in Economics and Mathematical Systems 521 (02/0815 ; K LI02 4), 2002closeclose -
Mixing beliefs among interacting agents
Advances in Complex Systems, 2001closeclose -
Les modèles cognitifs à l'épreuve des formes du religieux : proposition de directions de recherche centrées sur l'empathie
Intellectica, 1998closeclose -
L'autonomie est-elle création ou rupture d'une clôture? Tentative d'articulation entre les visions de l'autonomie de F. Varela et de C. Castoriadis
Revue internationale de systémique, 1997closeclose
Book Chapters (16)
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A calibration to properly design a model integrating residential mobility and migration in rural area
Advances in Social Simulation 2015, Advances in Intelligent Systems and Computing 528 (p. 163-179), Springer, 2017closeclose -
The Leviathan model without gossips and vanity: The richness of influence based on perceived hierarchy
Advances in Social Simulation 2015, Advances in Intelligent Systems and Computing 528 (p. 149-162), Springer, 2017closeclose -
Parameterisation of individual working dynamics
Empirical Agent-Based Modelling – Challenges and Solutions. Volume 1, The Characterisation and Parameterisation of Empirical Agent-Based Models (p. 133-169), Springer, New York, USA, 2014closeclose -
SVM approximation of value function contours in target hitting problems
Informatics in control, automation and robotics. 8th International Conference, ICINCO 2011 Noordwijkerhout, the Netherlands, July 28-31, 2011, Revised Selected Papers (p. 37-48), Springer, 2013closeclose -
La complexité d’un modèle simplifié d’interactions sociales : le modèle Leviathan
Modéliser & simuler. Epistémologie et pratiques de la modélisation et de la simulation (p. 749-778), Editions Matériologiques, Paris, 2013closeclose -
Geometric robustness of viability kernels and resilience basins
Viability and resilience of complex systems: concepts, methods and case studies from ecology and society (p. 193-218), Springer, 2011close -
Bridging the gap between computational models and viability based resilience in Savanna ecosystems
Viability and resilience of complex systems: concepts, methods and case studies from ecology and society (p. 107-130), Springer, 2011close -
Viability and resilience in the dynamics of language competition
Viability and resilience of complex systems: ; concepts, methods and case studies from ecology and society (p. 39-73), Springer, 2011close -
Approximating viability kernels and resilience values: algorithms and practical issues illustrated with KAVIAR software
Viability and resilience of complex systems: concepts, methods and case studies from ecology and society (p. 161-192), Springer, 2011close -
Viability and resilience of complex systems: concepts, methods and case studies from ecology and society
Springer, 2011closeclose -
Viability and resilience of a bacterial biofilm individual-based model
Viability and resilience of complex systems: concepts, methods and case studies from ecology and society (p. 131-157), Springer, 2011close -
Defining resilience mathematically: from attractors to viability
Viability and resilience of complex systems: ; concepts, methods and case studies from ecology and society (p. 15-36), Springer, 2011close -
The empathon: Towards a computational agent mimicking empathy
Activity-Based Modeling and Simulation (p. 37-51), Presses Universitaires Blaise Pascal, Clermont-Ferrand, 2010closeclose -
Probability distribution dynamics explaining agent model convergence to extremism
Social Simulation, technologies, advances and new discoveries (p. 43-60), Information Science Reference, Hershey, USA, 2008closeclose -
An agent based model of agri-environmental measure diffusion: What for ?
Agent based modelling in natural resource management (p. 55-73), INSISOC, Valladolid, ESP, 2008closeclose -
Simulation de l'évolution des conversions à l'agriculture biologique dans le département de l'Allier entre 1994 et 1999 par un modèle multi-agents department
Complexity and Ecosystem Management: the Theory and Practice of Multi-agent Systems (p. 19), Edward Elgar Publishers, Cheltenham, UK/Northampton, MA, USA, 2002closeclose
In Proceedings (43)
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Bounded confidence in extreme opinion evolution : An online experiment
International Conference on Computational Social Science (IC2S2 2017), 10/07/2017-13/07/2017, Cologne, DEU (p. 3), 2017closeclose -
A calibration to properly design a model integrating residential mobility and migration in a rural area
11th Conference of the European Social Simulation Association: Social Simulation Conference, 14/09/2015-18/09/2015, Groningen, NLD , 2015closeclose -
The Leviathan model without gossips and vanity: the richness of influence based on perceived hierarchy
Social Simulation Conference 2015, 14/09/2015-18/09/2015, Groningen, NLD (p. 13), 2015closeclose -
Allis shad: A concrete example of how niche shift modelling studies could help in the definition of conservation measures
Aquatic Biodiversity and Ecosystems Conference, 30/08/2015-05/09/2015, Liverpool, GBR (p. 19), 2015closeclose -
In the Leviathan Model, the average opinion is higher when vanity is weaker with lower valued agents
5th World Conference on Social Simulation (WCSS), 04/11/2014-07/11/2014, Sao Paulo, BRA (p. 12), 2014closeclose -
The Leviathan model
METACOG 2014, the 2nd International Conference on Metacognition, 09/09/2014-10/09/2014, Clermont-Ferrand, FRA , 2014closeclose -
Bounded confidence model with fixed uncertainties and extremists: the opinions can keep fluctuating indefinitely
5th World Conference on Social Simulation (WCSS), 04/11/2014-07/11/2014, Sao Paulo, BRA (p. 12), 2014closeclose -
University laws in commuting flows
2013closeclose -
Lake eutrophication and environmental change: A viability framework for resilience, vulnerability and adaptive capacity
2013closeclose -
Finding a compromise between viability maximization and cost minimization: A stochastic dynamic programming algorithm
2nd International Workshop "Aux frontières de la viabilité et de l'économie", Université Paris Dauphine, 26/11/2013-27/11/2013, Paris, FRA , 2013closeclose -
Résilience et vulnérabilité dans le cadre de la théorie de la viabilité et des systèmes dynamiques stochastiques contrôlés
2013closeclose -
Resilience and vulnerability to a natural hazard: A mathematical framework based on viability theory
2013closeclose -
Resilience, vulnerability and adaptive capacity to environmental change in a dynamical system, and application to a nonlinear lake model
2013closeclose -
Viability theory to formalize resilience and vulnerability
2013closeclose -
Performance of water extraction in an endangered aquifer when management is not all powerful: a theoretical framework based on viability theory
2013closeclose -
Resilience and vulnerability from a stochastic dynamical system perspective
2013closeclose -
Adaptive approximate bayesian computation for complex models
The 11th World Meeting of The International Society for Bayesian Analysis (ISBA2012), 25/06/2012-29/06/2012, Kyoto, JPN , 2012closeclose -
Adaptive approximate Bayesian computation for complex models
8th World Congress in Probability and Statistics, 09/07/2012-14/07/2012, Istanbul, TUR (p. 11), 2012closeclose -
Inner and outer capture basin approximation with support vector machines
8th International Conference on Informatics in Control, Automation and Robotics, ICINCO 2011, 28/07/2011-31/07/2011, Noordwirjkerhout, NLD (p. 6), 2011closeclose -
Dispersion effect on generalisation error in classification: Experimental proof and practical algorithm
ICAART 2011 Conference .3rd Congference on Agents and Artificial Intelligence, 28/01/2011-30/01/2011, Rome, ITA (p. 4), 2011closeclose -
Modelling a network of rural municipalities
ESSA 2011, 19/09/2011-23/09/2011, Montpellier, FRA , 2011closeclose -
Calibrating a complex social model
European Conference on Complex Systems ECCS'11, 12/09/2011-16/09/2011, Vienne, AUT , 2011closeclose -
A commuting generation model requiring only aggregated data
7th European Social Simulation Association Conference, 19/09/2011-23/09/2011, Montpellier, FRA (p. 16), 2011closeclose -
Applying a moment approximation to a bacterial biofilm individual-based model
4th International Multi-Conference on Computing in the Global Information Technology, ICCGI 2009 , 23/09/2009-29/09/2009, Nice, FRA (p. 138-143), 2011closeclose -
How to generate the best low dispersion samples for active learning in classification ?
Active Learning and Experimental Design Workshop AISTATS, 16/05/2010, Sardaigne, FRA (p. 16), 2010closeclose -
Homogenization of physical properties of bacterial biofilms
CE2M10 (Changement d'échelle en mécanique des matériaux), 22/08/2010-03/09/2010, Briançon, FRA , 2010web bibclose -
Homogenization of the diffusion of bacterial biofilms
IV European Conference on Computational Mechanics, ECCM2010, 16/05/2010-21/05/2010, Paris , 2010web bibclose -
Applying homogenization techniques to determine macroscopic mechanical properties of bacterial biofilms
Biofilms4 International Conference , 01/09/2010-03/09/2010, Winchester, UK, GBR (p. 1), 2010web bibclose -
Applying a multiscale approach to explain biofilm formation
Advances in Interaction and Multiscale Mechanics" ( AIMM'10), 30/05/2010-03/06/2010, Jeju, KOR , 2010closeclose -
Computing the resilience of a wastewater treatment bioreactor
5th International Multi-Conference on Computing in the Global Information Technology, ICCGI 2010, 20/09/2010-25/09/2010, Valencia, ESP (p. 185-188), 2010closeclose -
Sélection de points en apprentissage actif. Discrépance et dispersion : des critères optimaux ?
MajecSTIC 2009 , 16/11/2009-18/11/2009, Avignon, FRA (p. 8), 2009closeclose -
Discrépance et dispersion : des indicateurs optimaux pour approcher des surfaces de réponse par des SVMs ?
Journée du GdR MASCOT-NUM (Groupement de recherche Méthodes d'Analyse Stochastique des Codes et Traitements Numériques), 18/03/2009-18/03/2009, Saint Denis, FRA (p. 1), 2009closeclose -
Discrépance et dispersion : des critères optimaux en apprentissage ?
CAP'09 (Conférence en Apprentissage), 25/05/2009-29/05/2009, Hammamet, TUN (p. 4), 2009closeclose -
How to optimize sample in active learning: Dispersion, an optimum criterion for classification ?
ENBIS (European Network for Business and Industrial Statistics) , 01/07/2009-03/07/2009, Saint-Etienne, FRA , 2009closeclose -
Openness leads to Opinion Stability and Narrowness to Volatility
ECCS'09, European Conference on Complex Systems, 21/09/2009-25/09/2009, Warwick, GBR (p. 14), 2009closeclose -
De l'importance des individus moins engagés pour l'émergence d'une majorité
MASHS : Modèles et Apprentissage en Sciences Humaines et Sociales, 08/06/2009-09/06/2009, Toulouse, FRA (p. 12), 2009closeclose -
Double modelling of the dynamic of activities in rural municipalities
7th Brazilian Congress of Agro-informatics (7. Congresso Brasileiro de Agroinformática ), 21/09/2009-25/09/2009, Viçosa, BRA (p. 5), 2009closeclose -
PRIMA, Prototypical Policy Impacts on Multi-functional Activities in rural municipalities
AgSAP Conference 2009, 10/03/2009-12/03/2009, Egmond aan Zee, NLD / Van Ittersum, M.K., Wolf J. and Van Laar H.H. (Eds), 2009, Proceedings of the conference on Integrated Assessment of Agriculture and sustainable Development: Setting the Agenda for Science and Policy (AgSAP 2009), Egmond aan Zee, the Netherlands, 10-12 mars 2009 (p. 64-65), Wageningen University and Research Center, Wageningen, NLD, 2009closeclose -
Utiliser des machines à vecteurs de support pour approcher les contours d'une fonction valeur dans des problèmes d'atteinte de cible
12ème Journée Scientifique de l'Ecole Doctorale Sciences Pour l'Ingénieur Apprentisage Statistique Apprentissage Symbolique, 04/06/2008-04/06/2008, Clermont Ferrand, FRA (p. 10), 2008closeclose -
Design and analysis of computer experiments with SimExplorer
ESM'2008 European Simulation and Modelling Conference, 27/10/2008-29/10/2008, Le Havre, FRA (p. 575-577), EUROSIS, 2008closeclose -
Les suites à discrépance faible : un moyen de réduire le nombre de vecteurs supports des SVMs
12ème Journée Scientifique de l'Ecole Doctorale Sciences Pour l'Ingénieur Apprentisage Statistique Apprentissage Symbolique, 04/06/2008-04/06/2008, Clermont Ferrand, FRA (p. 9), 2008closeclose -
Bounded confidence with rejection: clusters or scattered opinions ?
5th Conference of the European Social Simulation Association ESSA 2008, 01/09/2008-05/09/2008, Brescia, ITA / Proceedings of the Fifth Conference of the European Social Simulation Association (ESSA'08) (p. 12), University of Brescia, Brescia, ITA, 2008closeclose -
Bounded confidence with rejection: the infinite population limit with perfect uniform initial density
Modèles et Apprentissages en Sciences Humaines et Sociales (MASH), 05/06/2008-06/06/2008, Créteil, FRA (p. 10), 2008closeclose
Miscellaneous (1)
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Predicting the presence and the number of jobs in different services in Auvergne municipalities
2010closeclose
Dissertations (1)
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Modéliser des systèmes complexes : quelques pistes pour relever le défi
Habilitation à Diriger des Recherches, Ecole doctorale SPI de l'Université Blaise Pascal de Clermont-Ferrand, soutenue le 3 mars 2004, 2004closeclose
Technical Reports (10)
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Micro-simulation model of municipality network in the Auvergne case study
2012closeclose -
Final Report D0.4, PRIMA collaborative project, EU 7th Framework Programme, contract no. 212345
2012closeclose -
Livrable 2.1 du projet DISCO : Modèles individus-centrés et simulations Monte-Carlo
2011closeclose -
2nd Periodic Report D0.3b. PRIMA collaborative project, EU 7th Framework Programme, contract n° 212345
2011closeclose -
Periodic Report D0.3 PRIMA collaborative project, EU 7th Framework Programme, contract no. 212345
2010closeclose -
An analytical solution to support vector training: the recursive projection algorithm
2003closeclose -
Confronting evaluations of scenarios via Internet
2003closeclose -
Développement d'un outil pour la modélisation du risque ESST dans les filières viandes et co-produits, pour l'aide à la décision en matière de réglementation et de prévention : rapport de recherche
2001closeclose -
Calcul de l'impact économique de la conversion à l'agriculture biologique : projet IMAGES, modèle Allier Conversion à l'agriculture biologique
2001closeclose -
Projet européen IMAGES :Simulation de l'évolution des conversions à l'agriculture biologique dans le département de l'Allier entre 1994 et 1999 par un modèle multi-agents Rapport d'avancement du cas Allier
2000closeclose