Papers by Abderrafiaa Koukam
Hierarchical cluster-based link state routing protocol for large self-organizing networks
2011 IEEE 12th International Conference on High Performance Switching and Routing, HPSR 2011, 2011
AbstractScalability is one of critical challenges for link-state routing protocols in mobile wir... more AbstractScalability is one of critical challenges for link-state routing protocols in mobile wireless networks. In this context, this paper proposes a proactive link-state protocol based on hierarchical clustering named L-HCLSR. The proposed protocol makes use of ...
A new cluster-based link state routing for mobile ad hoc networks
2012 International Conference on Communications and Information Technology (ICCIT), 2012
ABSTRACT Scalability is one of critical challenges for link-state routing protocols in mobile wir... more ABSTRACT Scalability is one of critical challenges for link-state routing protocols in mobile wireless networks. Reducing routing overhead is the key to resolve the scalability problem. In this context, we propose a new link state routing protocol named CLSR. It uses clustering to reduce the routing overhead and the size of routing table. It introduces one level hierarchy in the network and it applies proactive link state approach inside as well as outside clusters. We study through simulations the performances of our protocol CLSR, and we compare it to F-OLSR, OLSR-Tree and SA-OLSR protocols. Simulations show that our protocol provides comparable or better performances in term of the generated routing overhead and the data packets delivery ratio.
Proceedings of the 12th International Conference on Enterprise Information Systems, 2010
We will present in this paper how to ensure a knowledge evaluation and evolution in a knowledge m... more We will present in this paper how to ensure a knowledge evaluation and evolution in a knowledge management system by using a Semantic Wiki approach. We describe a Semantic Wiki called WikiDesign which is a component of a Knowledge Management system. Currently WikiDesign is use in engineering department of companies to emphasize technical knowledge. In this paper, we will explain how WikiDesign ensures the reliability of the knowledge base thanks to a knowledge evaluation process. After explaining the interest of the use of semantic wikis in knowledge management approach we describe the architecture of WikiDesign with its semantic functionalities. At the end of the paper, we prove the effectiveness of WikiDesign with a knowledge evaluation example for an industrial project.
Distributed holonic multi-agent system for resource discovery in grids
Multiagent and Grid Systems, 2006
The article presents the memetic SOM, an evolutionary algorithm embedding self-organizing maps as... more The article presents the memetic SOM, an evolutionary algorithm embedding self-organizing maps as operators to address the vehicle routing problem with time windows (VRPTW). We show that it allows to extend the self-organizing map to deal with a version of the vehicle routing problem with time windows where the number of vehicles is an input, and by adding some walking distance from customers to bus stops. Then, we derived solutions for the classical VRPTW with no walking distances. This is illustrated on Solomon's standard test problems.
Towards to an Agent-Oriented Meta-Model for Modeling Vehicular Systems with Multi-Configuration Ability
ABSTRACT Agent technology is a software paradigm that permits to implement large and complex dist... more ABSTRACT Agent technology is a software paradigm that permits to implement large and complex distributed applications. In order to assist the development of multi-agent systems, agent-oriented methodologies (AOM) have been created in the last years to support modeling more and more complex applications in many different domains. By defining in a non-ambiguous way concepts used in a specific domain, Meta modeling may represent a step towards such interoperability. In the transportation domain, this paper proposes an agent-oriented meta-model that provides rigorous concepts for conducting transportation system problem modeling. The aim is to allow analysts to produce a transportation system model that precisely captures the knowledge of an organization so that an agent-oriented requirements specification of the system-to-be and its operational corporate environment can be derived from it. To this end, we extend and adapt an existing meta-model, Extended Gaia, to build a meta-model and an adequate model for transportation problems. Our new agent-oriented metamodel aims to allow the analyst to model and specify any transportation system as a multi-agent system. In this paper, we aim to propose an Agent-Oriented meta-model adequate to any Transportation Systems with multi-configuration ability problem.
Ontology-Based Simulation and Qualification of Buildings
ABSTRACT
A formal approach to design and reuse of agent and multiagent models
Ipseity: An Open-Source Platform for Synthesizing and Validating Artificial Cognitive Systems in MAS (Demonstration)
ABSTRACT This article presents an overview of Ipseity, an open-source platform developed in C++ w... more ABSTRACT This article presents an overview of Ipseity, an open-source platform developed in C++ with the Qt framework. The current version of the platform includes a set of plugins im-plementing single-agent and multi-agent environments, hard-coded controllers based on Artificial Intelligence (AI) tech-niques, classical Reinforcement Learning (RL) techniques like Q-Learning, Sarsa, Epsilon-Greedy combined with some linear function approximators, as well as a Machine Learn-ing (ML) technique for Apprenticeship Learning (AL). Its architecture allows users to execute standard AI approaches as well as model-based, model-free, offline, online, standard and approximated RL algorithms. Ipseity is targeted at a broad range of users interested in AI in general, including industrial practitioners, as well as ML researchers, students and teachers. It is regularly used as a course support in Artificial Intelligence and it has been used successfully to manage power flows in simulated microgrids using multi-agent reinforcement learning.
Toward an Environment for the Simulation of Heterogeneous Entities in Virtual Cities
ABSTRACT The study of the individual mobility phenomena is significant in the fields of the devel... more ABSTRACT The study of the individual mobility phenomena is significant in the fields of the development of urban sites, the study of security, the architecture, and the flow analysis. Whatever the studied environment, indoor or outdoor, the multi- agent approach is a highly suitable tool to study the dynamics of displacement. This paper presents an environment model, which is dedicated to the simulation in 2D or 3D virtual environments. It is primarily designed for the simulation of crowds and traffic. The model combines the agent-oriented approach with algorithms used in the fields of virtual reality simulation and video games. Our model is designed to provide the mechanisms of realistic perceptions and actions to agents. It is a software framework that provides a collection of tools to ease the implementation, and make faster the simulation of heterogeneous entities (pedestrians, cyclists, drivers...) in a virtual world.
Approche Multi-Formalismes Pour La Spécification Des Systèmes Multi-Agents
A layered multi-agent model for multi-configuration platoon control
ABSTRACT Nowadays,urbanenvironmentssufferfromrecurrenttrafficjamwithassociatedsideeffects.Platoon... more ABSTRACT Nowadays,urbanenvironmentssufferfromrecurrenttrafficjamwithassociatedsideeffects.Platoonsystem, a setofvehicleattachbyvirtuallink,isoneofanswer.inordertocopewithissuessuchasdifferentplatoon geometrics sinceseveralyears,we’reseeingthemulti-agentsystemaselementofresponsetomanyproblems. This papertoapplythisconceptforplatoonvehiclessystemthroughanmulti-agentmodelbasedonkeylayers. Thanks thissolution,implementedasanagentwhichmakesdecisionsdependingonlyonitsownperception where eachvehiclesisrecorded,analysed,transformincarcommandandadaptedtovehiclebyacommand filter.,
Atal, 2007
Since about two decades, many works have been made in order to provide solutions to the vehicle p... more Since about two decades, many works have been made in order to provide solutions to the vehicle platoon problem. The main issue related to platoon systems consists in controling the global platoon geometry: inter vehicular distance and trajectory matching. Another important aspect is related to platoon's evolution, mainly by vehicle merging and splitting. This paper presents a reactive multiagent solution aimed at providing distributed control of vehicle platoons with train configuration. This solution is based on a physics inspired interaction model in which every vehicle interacts only with the preceding one. Platoon stability emerges as a global result of the individual interactions. Furthermore, the adaptation to different kind of vehicles is made by tuning model's physical parameters. Simulation experiments have been made in order to compare our proposal with impedance control model. The experiments have been designed in order to evaluate trajectory matching abilities and merge/split capabilities. Experiments with on-wheels small-robots have also contributed to the validation of our approach.
Procedia Computer Science 10 (2012) 795-800
Multi-Agent Technology for Power System Control
ABSTRACT The electric grid is evolving towards wh at has been defined as the “smart grid paradigm... more ABSTRACT The electric grid is evolving towards wh at has been defined as the “smart grid paradigm.” The development of communication in frastructures provides power electronics interfaces with the ability to control complex power systems in efficient and scalable ways and in real-time. Multi-Agent Systems (MAS) are based on distributing information and computing algorithms for complex ne tworks, and are an excellent technological solution for this application. This c hapter focuses on applications of MAS in power systems and describes how they can be use d with other artificial intelligence techniques in order to make the grid smarter and mo re flexible. In addition to presenting the basics of multi-agent theory, this c hapter covers some design procedures and provides several examples, as well as perspecti ves for future developments of MAS in power systems control.
SafePlatoon: Sûreté de Convois de Véhicules Autonomes
ABSTRACT ,
Event-B Specification of Transportation System in Dynamic Environment: Study of Urban Public Transportation System
ABSTRACT Formal reasoning is needed to ensure system correctness and structure their development.... more ABSTRACT Formal reasoning is needed to ensure system correctness and structure their development. Event-B is a formal method with tool support allowing a stepwise development of reactive distributed systems. We propose using Event-B to helpful the specification and the safe development of Multi-Agent System. Agent technology is a software paradigm that permits to implement large and complex distributed applications. In order to assist the development of multi-agent systems, agent-oriented methodologies (AOM) have been created in the last years to support modeling more and more complex applications in many different domains. But this specification remains abstract and it necessity a formal method in order to obtain a consolidated specification. In this article, we mainly report our experience with the Event-B stepwise in order to specify and validate our new agent-oriented meta-model (Platooning Meta-Model) that allow the analyst to model and specify any transportation system as a multi-agent system in a dynamic environment. This article also aims at serving as a guide for the development of other MAS, taking agents specific features and the environment properties into account.
Environment perception for vehicle autonomous navigation in urban areas
ABSTRACT ,
A middleware for large scale networks inspired by the immune system
Proceedings 16th International Parallel and Distributed Processing Symposium, 2002
... Trends today are towards networking resources. For example, a user with a diskless machine ca... more ... Trends today are towards networking resources. For example, a user with a diskless machine can load a word-processor for a punctual need. ... Application resources are soft-ware entities, possibly mobile, which are managed by an application. ... Benefits of Mobile agents ...
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Papers by Abderrafiaa Koukam