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Introduction
My research interests include design of simulation applications using multi agents systems and infrastructures required for their use. I have conduct several research projects of complex system modeling and simulation where decision should be based on a spatially explicit understanding of complex ecological systems and their interactions with social systems in Reunion Island, a French overseas department in the Western Indian Ocean.
Current institution
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September 1996 - present
Position
- Professor (Full)
Description
- Prof. Rémy Courdier received The Ph.D. degree in computer science from Nice Sophia-Antipolis University (France), he defended an accreditation to supervise researches projects and teams "Habilitation a Diriger des Recherches (HDR)" in 2003. He is university professor since 2008 and has been head of the Computer Science and Mathematics Research Laboratory of the University of Reunion Island. He has a strong Background in software engineering by working in R&D Teams of international IT Companies.
Publications
Publications (86)
Alors que l’économie circulaire (EC) comme nouveau paradigme économique et sociétal émerge, la place du secteur agricole dans les initiatives d’accroissement de la circularité dans les territoires est questionnée. Ce questionnement est d’autant plus pertinent dans un contexte insulaire comme celui de La Réunion, où les enjeux d’autonomie alimentair...
On a global scale, the environmental footprint of digital technology represents a continent two to three times the size of France and five times the size of the French car fleet. In order to limit the negative impact of this overabundance and to optimize the emerging computing potential of our environment, we propose an architecture model and its i...
EN- Ambient intelligence is a paradigm for the deployment of intelligent, adaptive environments designed to support users' activities. Based on this paradigm, Ambient Assisted Living (AAL) Systems help to prevent and improve the health and living conditions of its users, who are often people affected by a motor or cognitive disorder. However, in th...
EN-- Towns and cities are currently equipping themselves with a wide range of to transform themselves into "smart cities". To control this mass of connected objects, autonomous software entities, called agents autonomous software entities, called agents, which communicate to offer services. However, the knowledge carried by the infrastructures of o...
À l'échelle planétaire, l'empreinte environnementale du numérique représente un continent de 2 à 3 fois la taille de la France et 5 fois le poids du parc automobile français. La cause majeure de cette catastrophe écologique serait la surabondance d'objets connectés, liée notamment à un usage irraisonné amplifié par une logique de surconsommation. A...
This paper presents an agent-based model, which is developed to support decision-makers in the selection of best biowastes management scenarios. The model simulates biowastes transfers between the production points to farmland and analyses supply/demand balance of organic matter (transformed biowastes) as a complementary organic resources for crops...
Ambient computing and Internet of Things have reached a level of maturity and a dynamic activity of research and engineering actors. Their goal is to create interactions between a set of distributed devices in an environment, in order to assist human activities. Multi-agent system is an interesting tool for coordinating devices and services for thi...
A multi-agent based simulation aims at imitating complex phenomena or processes of the real world. For that purpose, the simulation platform has the simulated model evolve by running a virtual time and by activating agents’ behaviour at each advancement of the time. This time coherence is ensured by the scheduler. The way this scheduler manages the...
In this work we deal with action selection issues for software agent operating in ambient environment which is highly dynamic. Unpredictable events may occur and inappropriate actions may damage the software and its environment. Adaptation ability is a key requirement for such issues. We use multi-agent paradigm to address them. We propose a regula...
The environment plays an important role in multi-agent sys- tems (MASs), especially in situated MASs where they can be used as a shared memory for agents and as a medium for indirect coordination. There could exist different types of environment, with different structure and containing differ- ent types of information. The more choices for environm...
SkuadCityModel est une simulation qui vise à reproduire les déplacements d'une flotte de véhicules sur un territoire donné. Celle-ci peut être utilisée en tant qu'outil d'aide à la décision pour la prévention et la proposition de solutions aux problématiques urbaines liées à la circulation. Ce genre de simulation met en jeu une certaine lourdeur d'...
Simulation models are often used by policy makers as decision support tools for smart city design and planning. However, many of them are designed to be suitable for a particular kind of territory with the corresponding characteristics; especially for city contexts. Therefore, limitations could appear when transferring such simulation models to isl...
Simulation models can be used as decision support tools for smart city design and planning. They allow to evaluate the possible consequences of projects, before their implementation in the real world. Decision makers could benefit from replicable ones that can be relevant and easily transferable from one territory to another so solutions can be com...
The massive use of connected objects and the development of the Internet of Things leads us to ask questions about the way of use and the intelligence of these objects. First, we will present the main lines of Internet of Things research related to the intelligence. Then, we will highlight some situations showing the boundaries of the different axe...
This paper presents the SIEGMAS system (Stakeholders Interactions in Environmental Governance by a Multi-Agent System) designed to simulate interactions between stakeholders in common pool resources in Indian Ocean Islands. This decision support system tool is based on a model allowing the study of the interactions between agents acting on a territ...
Ce papier traite de la représentation de l'action basée sur le concept d'affordance et le concept d'émergence dans une architecture multi-agents (SMA). Ce modèle propose d'inverser la vision classique des SMA où l'acteur est représenté par un agent tandis que les entités passives du système sont représentées par les "objets de l'environnement". Dan...
This article proposes to study the interactions between the stakeholders through the study of management transfers in favor of the Common Pool Resources (CPR). The SIEGMAS model (Stakeholders Interactions in Environmental Governance by a Multi-Agent System) shows the interest of using a multi-agent simulation to build new alternatives to existing a...
The initialization at the beginning of all type of simulation is recurring. In the field of multi-agents, spatial environments on a micro or macro scale, or more abstract context, such as mapping out energy sources for example, need often to be modelled. The initialization of these environments wherein evolve agents is generally tedious and time-co...
Lorsque l'on comprend ce qu'est la SOA, quels sont ses avantages et ses inconvénients, la première question qui se pose est : "comment procéder ?". Il n'y a pas de réponse unique. Cependant, il est nécessaire de suivre une méthodologie de conception de simulations ou encore un processus de simulation. Elle consiste à définir la suite d'opérations à...
The multi-agent systems are successfully used in modeling of dynamic complex systems, and simulations of these models reinforce the knowledge of experts and even allow them to explore new horizons or to cross boundaries. This is the reason why the models being tackled are increasingly varied, and as one goes along with experimentations, these model...
Ce papier présente un modèle de représentation de l'action située dans les systèmes agricoles. L'idée est de considérer un système multi-agents dans lequel l'environnement constitue l'entité intelligente qui décide à un instant et dans une localisation donnés de l'action à réaliser. Pour cela nous utilisons le concept d'affordance, de stigmergie et...
This paper describes a model to represent human activities in farming systems based on the situated action theory. The idea is to consider the environment as an intelligent entity that has the ability to decide locally, at given time and space, the actions to perform. Surrogates of real actors, called actuators, just execute the actions dictated by...
This paper describes a model to represent human activities in farming systems based on the situated action theory. The idea is to consider the environment as an intelligent entity that has the ability to decide locally, at given time and space, the actions to perform. Surrogates of real actors, called actuators, just execute the actions dictated by...
In the last few years, the multiagent system’s paradigm has been more and more used in various fields, specially in the simulation field (MAS). Whenever a new application came into being and has been validated by its review board, specialists usually want to reuse it, fully or partially, in order to cut down the time and price of developing similar...
Emergent phenomena are often relevant for users and developers of simulation models. But the potential reification of these phenomena raises many questions, conceptually (should they be reified?) and technically (how to do it?). In this paper, we show that such a reification can be considered as an effective way to refine simulation models in which...
This paper proposes a model to represent and simulate human activities in farming systems. Our definition of the activity concept (otherwise said 'action') stems from the 'situated action' theory (Suchman, 1987). Action may be summarized simply as 'what people are actually doing'. Therefore, we characterize action according to four dimensions: acto...
In multiagent simulations, environment is considered to be a minor concern compared to agents’ behavior, which is the center of attention during the modeling process.
Therefore environments are often basic, most of the times bounded or cyclical. Moreover, they are not detailed enough to support generalization of simulation results. Environment shou...
Résumé La prise en compte des phénomènes émergents présente un intérêt manifeste pour les utilisa-teurs et les concepteurs de Simulations Orien-tées Agent. Mais la réification éventuelle de ces phénomènes soulève de nombreuses questions, que ce soit sur le plan conceptuel (doit-elle se faire ?) ou sur le plan technique (comment la faire ?). Dans ce...
Coordination is defined as the management of dependencies between activities in order to reach an objective. These dependencies generally concern resource sharing and the compliance with temporal (simultaneity, precedence) and spatial constraints. This management is made according to two principal modes: explicit and implicit. The explicit mode is...
Representation of temporal concepts impacts simulation models and their execution performances. Large-Scale Agent-based Simulations require resources that can be mainly found in distributed systems. We propose to extend our work on the Temporality model used to represent temporal concepts in our platform GEAMAS-NG. This enables us to parallelize si...
Un projet nommé GERRI a été lancé à la Réunion dans le but de favoriser le développement de nouvelles technologies écologiques. Une des pierres fondamentales de ce projet est la maitrise de l’énergie, dont l’aménagement énergétique d’un territoire fait partie. Les recherches dans ce dernier domaine du projet sont peu foisonnantes. Nous proposons da...
Résumé Les données à prendre en compte dans un sys-tème multi-agents sont généralement nom-breuses et de nature complexe. Beaucoup de temps est consacré à la modélisation du sys-tème et à son implémentation, mais les techni-ques dédiées à l'initialisation sont souvent non-explicitées et les schémas de configura-tion mis en place sont rarement réuti...
Un projet nommé GERRI a été lancé à la Réunion dans le but de favoriser le développement de nouvelles technologies écologiques. Une des pierres fondamentales de ce projet est la maitrise de l’énergie, dont l’aménagement énergétique d’un territoire fait partie. Les recherches dans ce dernier domaine du projet sont peu foisonnantes. Nous proposons da...
Le projet GERRI donne corps pour l'île de la Réunion aux orientations du Grenelle Envi- ronnement, dont l'aménagement énergétique d’un territoire est l’une des facettes. Il s'agit de prévoir la consommation et la production d'énergie future, tout en respectant un ensemble d'indicateurs économiques et écolo- giques, à l’aide de nombreux schémas d'in...
Les données à prendre en compte dans un système multi-agents sont généralement nombreuses et de nature complexe. Beaucoup de temps est consacré à la modélisation du système et à son implémentation, mais les techni- ques dédiées à l’initialisation sont souvent non-explicitées et les schémas de configura- tion mis en place sont rarement réutilisables...
Decision-makers who wish to manage Insular Tropical Environments more efficiently need to narrow the gap between the production
of scientific knowledge in universities, or other labs, and its pragmatic use by the general public and administrations. Today,
one of the main challenges concerning the environment is the preservation of the biodiversity...
With the relatively recent awareness of the fragility of the natural world environment (Rio Conference "Earth Summit" in 1992), Information Systems (IS) trying to identify and help to manage biodiversity have proliferated. Given the various data that they contain, they are complex applications, hardly accessible to the general public. At the same t...
With the relatively recent awareness of the fragility of the natural world environment (Rio Conference "Earth Summit" in 1992), Information Systems (IS) trying to identify and help to manage biodiversity have proliferated. Given the various data that they contain, they are complex applications, hardly accessible to the general public. At the same t...
Emergence is a fascinating concept for most scientists, and multiagent simulations are known to allow and facilitate its representation. Research in this area yield to several definitions and classifications of emergent phenomena, but only a few of them offers a solution for a concrete reification of emergence in simulation. This paper deals with t...
The computerization of scientific data treatment and the relatively recent awareness of the fragility of the natural world environment (Rio Conference "Earth Summit" in 1992) have led to the proliferation of Information Systems dedicated to biodiversity. Given the various data that they contain, they are complex applications, focused on the needs o...
This paper deals with the important concept of emer-gence in complex systems and in multiagent simulation. Research in this area yield to several definitions and classifications of emergent phenomena, but only a few of them offer a solution for emergence reification. As we know, this kind of notion does not have yet, for-mal definition, if any coul...
This paper presents a simulation platform which has been realized in Java 1.1 for the study of chaotic behavior and evolutionary processes in non-linear systems. To support the modeling of such complex systems, we propose the use of agent technology as high level tool to design simulation applications. The framework enables to study emergence by ex...
Multi-Agent Based Simulation (MABS) is a suitable way to simulate the dynamics of natural or social systems. However, observing and analysing large-scale simulations involving numerous, complex and heterogeneous agents is still a challenge. Understanding simulation results requires the user to perform the following visual information-seeking tasks:...
In this paper, we present a conceptual model and the associated framework that can be used to model and implement MASs simulation
based on a core concept: the Role. We especially assume that collective agent structures, such as groups and organizations
gain to be represented through the concept of Role. We first provide a formal specification of th...
In MultiAgent Based Simulation (MABS), the observation of simulation results is a complex task: interactions between agents produce a large mass of results, which is particularly complex to analyze. We focus on agents' interactions by message exchanges, from the point of view of human observers. In order to facilitate the observation and the analys...
In MultiAgent Based Simulation (MABS), the observation of simulation results is a complex task: interactions between simulation agents produce a large mass of simulation results, which is particularly complex to analyze. We are assured that the use of another second multiagent system is a suitable approach to achieve this task. This second system t...
The development of solutions to complex problems requires finding answers to several questions which are obstacles on the road leading to the solution. To perpetuate progress, the possibility to reuse and integrate these intermediate answers in the other constructions of complex solution becomes a requirement In this article we consider the context...
This paper presents a simulation platform that has been realised in Java 1.1 for the study of behaviour and evolutionary processes in non-linear systems. To support the modelling of such systems, we propose the use of agent technology as high level tool to design applications. The framework enables to study emergence by exploiting distributing comp...
RÉSUMÉ. Si dans la réalité nous ne pouvons que subir le temps, les simulations multi-agents nous permettent de l'utiliser comme moteur d'évolution sur des modèles réduits afin d'en déduire des nouvelles connaissances sur le monde réel. Aussi, la façon dont le temps virtuel est géré par le simulateur joue un rôle prédominant sur le potentiel de ce d...
This paper presents the utilization of the multi-agent platform Geamas through the Biomas application for the collective management of animal wastes. The complexity of the scenarios under study gives rise to many unpredictable behavioral schemas whose analyses necessitate a simulation approach. In the present article we describe the whole set of co...
In this paper, we present a new way to model agent and multi-agents systems (Mas). The modeling we introduce relies on the proposal of a MAS generic model, and a hybrid model of aptitudes supporting the specific agent's properties (autonomy, independence, adaptation). In addition to the formal description of the agent's particular features, the hyb...
Most of hybrid agent architectures are made by a hierarchical succession of a reactive (at a lower level) and a cognitive (at a higher level) layers. Each of these layers represents a behavior, a function, a decision, etc. Instead of using such functional layers, we propose in this paper a generic model of social hybrid agent, which is rather based...
In a multi-agent system (MAS), agents preserve their proactivity
and autonomy. Consequently, one associates an independent process with
each of them, but when the simulation is only on a single mono-processor
computer, the performance tends to be affected because computer
resources are more limited. Unlike a system of multicomputers (where
generall...
modélisation des comportements d'agents est toujours un aspect important dans les travaux portant sur la conception des systèmes multi-agents. D'une manière générale, cette modélisation comportementale porte sur la mise en place d'un ensemble d'actions que l'agent devrait accomplir dans ses activités. Notre approche dans ce papier consiste à propos...
When multi-agent research is used in electronic commerce, most of time, the study relates to the negotiation. The general idea is to send agents negotiating in place of human negotiator, after preliminary allotted the appropriate behavior. The behavior depends on the type of transaction. The negotiation is however only one a ngle of vision. We shou...
Ce travail vise à modéliser les pratiques de gestion des effluents d'élevage dans une localité rurale afin de simuler les échanges de matières organiques, les coûts de transfert, et les négociations entre exploitants agricoles. L'objectif poursuivi est de pouvoir caractériser les dysfonctionnements et tester des alternatives d'organisation des acte...
This paper presents the object oriented design and implementation of GEAMAS V2.0, a toolkit for virtual simulations of complex systems. GEAMAS V2.0 is structured in three modules: the kernel, the generation environment and the simulation environment. The kernel implements an object model for agents and provides generic classes. The generation envir...
GEAMAS is a knowledge engineering environment for multi-agent simulation of complex systems. The basic architecture of GEAMAS is designed around three dimensions: MultiAgent Systems (MAS) software design, MAS knowledge abstraction and MAS services dimension. Each one of this three aspects, is implemented into several modular open software layers. F...
The general framework tackled in this paper is the automatic generation of intelligent collective behaviors using genetic programming and reinforcement teaming. We define a behavior-based system relying on automatic design process using artificial evolution to synthesize high level behaviors for autonomous agents. Behavioral strategies are describe...
The general framework tackled in this paper is the automatic generation of intelligent collective behaviors using genetic programming and reinforcement learning. We define a behavior-based system relying on automatic design process using artificial evolution to synthesize high level behaviors for autonomous agents. Behavioral strategies are describ...
Le cadre général de notre projet est celui du développement d'environnements de simulation de systèmes complexes par une approche agent, où l'objectif poursuivi est la définition et la mise en oeuvre d'une plate-forme générique et évolutive. Cet article décrit une application de nos recherches dans ce domaine, en présentant un processus de développ...
In this paper, we present a knowledge based system which seems to be particulary adapted to support the special mechanisms required by fault diagnosis systems. This article presents the data representation used to describe the knowledge base and the architecture of a deductive machine implemented to operate on this complex knowledge structure. This...
In this paper, we present a knowledge based system which seems to be particulary adapted to support the special mechanisms required by fault diagnosis systems. This article presents the data representation used to describe the knowledge base and the architecture of a deductive machine implemented to operate on this complex knowledge structure. This...
URL : http://www.univ-reunion.fr/~mas2 RESUME : Ce travail vise à modéliser les pratiques de gestion des effluents d'élevage dans une localité rurale afin de simuler les échanges de matières organiques, les coûts de transfert, et les négociations entre exploitants agricoles. L'objectif pour-suivi est de pouvoir caractériser les dysfonctionnements e...
Recent concentration of indoor livestock farming in the Highlands of the Reunion Island generates environmental risks. Livestock effluent management is often difficult due to the lack of suitable spreading areas close to the farms. However, crop farms in the Lowlands are demanding organic matter to maintain soil fertility. This is the case of the l...
Résumé Les simulations orientées agents (SOA) per-mettent d'appréhender les systèmes réels com-plexes en facilitant notamment leur modélisa-tion et leur observation. Pour que ces simula-tions puissent être exploitées, les plates-formes de SOA doivent offrir des temps d'exécution des simulations toujours plus courts, ceci mal-gré la complexité crois...
Résumé : L'Internet et les Technologies de l'Information et de la Communication (TIC) sont en train de modifier fondamentalement le métier d'enseignant-chercheur : les productions de contenus de l'université peuvent être visités par un ensemble de plus en plus grand d'internautes. La demande croissante pour des connaissances pointues et de qualité,...
Agent-based simulation applied to collective management of animal wastes; implementation of generic concepts of the Geamas platform within the Biomas application. This paper presents the use of the multi-agent platform Geamas through an application, Biomas, oriented towards the collective management of animal wastes. The complexity that holds in th...
RÉSUMÉ.Dans cet article, nous présentons une approche de modélisation et conception d'agents et de systèmes multi-agents (SMA). Elle s'appuie sur la proposition d'un modèle générique de SMA et d'un modèle hybride d'implémentation supportant les caractéristiques du paradigme agent. Ce modèle hybride offre des avantages intrinsèques de manipulation e...
Questions
Question (1)
Our idea aim at making the multiagent simulation paradigm evolve in order to consider time as a new medium of interaction, or in other word to integrate the temporal dimension as an environment, in the same way as the spatial environment and the social environment. This time environment is used to support the exchange and the storage of time information. It complements the simulation scheduler which manages the simulation activation cycle.
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