Multiagent Systems

Multi-Agent Systems Design for Novices

by Keerthi Rajendran

Lynch, S., Rajendran K., Journal of Computer Science Education (Vol. 15, 1). (2005)

Advanced approaches to the construction of software systems can present difficulties to learners. This is true for... more Advanced approaches to the construction of software systems can present difficulties to learners. This is true for multi-agent systems (MAS) which exhibit concurrency, non-determinacy of structure and composition and sometimes emergent behavior characteristics. Additional barriers exist for learners because mainstream MAS technology is young and design methodologies are still evolving.

This paper considers the benefits and difficulties associated with teaching/learning agent technology and recommends an approach used by the authors. The paper examines Agent UML - a set of proposed extensions to UML to facilitate MAS design but suggests that simpler design tools are more appropriate for novice MAS programmers. A small suite of preferred tools are presented.

Autonomy and Desire in Machines and Cognitive Agent Systems

by Kevin Magill

Co-authored with Yasemin J. Erden, published 'Online First' in 'Cognitive Computation', 2012, DOI DOI 10.1007/s12559-012-9140-9. Available through subscribing institutions. Drop me a line if you can't access.
Substantially revised from 2011 paper of same title.

The development of cognitive agent systems relies on theories of agency, within which the concept of desire is key.... more The development of cognitive agent systems relies on theories of agency, within which the concept of desire is key. Indeed, in the quest to develop increasingly autonomous cognitive agent systems, desire has had a significant role. We argue, however, that insufficient attention has been given to analysis and clarification of desire as a complex concept. Accordingly, in this paper, we will draw on some key philosophical accounts of the nature of desire, including what distinguishes it from other mental and motivational states, in order to identify some key characteristics of desire as a complex concept. We will then draw on these in order to investigate the role, definition and adequacy of concepts of desire within applied theoretical models of agency and agent systems.

A High Speed and Performance Optimization Algorithm Based on Gravitational Approach

by Mina Sohrabi

Naji, H.R., Sohrabi, M., Rashedi, E., "A High Speed and Performance Optimization Algorithm Based on Gravitational Approach", Computing in Science and Engineering (ieee), 2011.

Recently a novel heuristic search algorithm, called Gravitational Search Algorithm (GSA), which is based on the law of... more Recently a novel heuristic search algorithm, called Gravitational Search Algorithm (GSA), which is based on the law of gravity and mass interactions, has been proposed. Although GSA has high performance in solving various optimization problems, it has some time consuming computations for calculation of the total force on each mass which makes the speed of optimization low.
In this paper we introduce a new approach, which improves GSA's speed considerably. Our approach is based on the multi-agent systems where multiple agents are the mechanism used to express the parallelism. In multi-agent based GSA, complex problems are decomposed into smaller and simpler components that are handled by different agents in the system. Our
experimental results show our multi-agent based GSA approach provides a high performance and high speed optimization methodology that can help scientists in a variety of science and engineering computations.

Modelling groups of plausible virtual pedestrians

by Christopher Edward Peters

Peters, C. and Ennis, C.
IEEE Computer Graphics and Applications, Special Issue on Virtual Populace, vol. 29, no. 4, pp. 54 - 63, July/Aug, 2009 doi:10.1109/MCG.2009.69
Bibtex available: http://www.coventry.ac.uk/ec/~cpeters/bibtex/bibtex.html#CGA09

In the domain of real-time urban vistas, a modern vision of a vast populace inhabiting a sprawling metropolis is... more In the domain of real-time urban vistas, a modern vision of a vast populace inhabiting a sprawling metropolis is replacing that of the ghost-towns of past. Working towards this ideal, we describe the methodology we are using to model dynamic crowd scenarios and an exemplar based on it. Video corpus is consulted for informing the modelling process and perception based evaluations are conducted on the resultant scenarios with the goal of improving the visual plausibility of the crowd, rather than correctness of simulation. Using this methodology, the exemplar focuses on modelling small groups of pedestrians. While it is generally assumed that the addition of groups can improve the plausibility of crowd scenarios, little is known about how humans perceive the results. We shed light on these issues, demonstrating the practical application of the methodology in a real-time crowd animation system.

Promoting Increased Energy Efficiency in Smart Grids by Empowerment of Customers

by Rune Gustavsson

Published online by InTech

Chhallenges of design and implementation of Smart grids Chhallenges of design and implementation of Smart grids

Cooperative and Coordinated Assembly for Heterogeneous Robots via Distributed Mobile Agents

by Juan Rojas

Design of multiagent system for worm spreading reduction

by Alaa Hamouda

With the explosive growth of Internet applications, the threats of network worms against computer systems and network... more With the explosive growth of Internet applications, the threats of network worms against computer systems and network security are seriously increasing. Many recent researches concentrate on providing a propagation model and early warning. In fact, the defense against worms in a realistic environment is an open problem. In this work, we present WSRMAS (worm spreading_reduction multi_agent system) as a system that includes a worm defense mechanism to considerably reduce the rate at which hosts are infected. As WSRMAS needs a suitable infra-structure, its architecture was elaborated and an agent platform was designed and implemented to support WSRMAS functions. The proposed system was provided once with a centralized plan and second with a decentralized (distributed) plan. In both cases the system performance was evaluated. Also different communication capabilities using Knowledge Query Manipulation Language (KQML) were exploited to improve WSRMAS performance. The ratio between worm and anti-worm spreading was studied to investigate its influence on the defense efficiency. Taking into account that some machines may not deploy WSRMAS, consequently, the effectiveness of WSRMAS under different operational conditions has been studied.

Transaction Agent Modelling: From Experts to Concepts to Multi-Agent Systems

by Richard Hill

Whilst the Multi-Agent System (MAS) paradigm has the potential to enable complex heterogeneous information systems to... more Whilst the Multi-Agent System (MAS) paradigm has the potential to enable complex heterogeneous information systems to be integrated, there is a need to represent and specify the nature of qualitative conceptual transactions in order that they are adequately comprehended by a goal-directed MAS. Using the Transaction Agent Model (TrAM) approach we examine the use of Conceptual Graphs to model an extension to an existing MAS in the community healthcare domain, whereby the existing agent capabilities are augmented with a robust set of behaviours that provide emergency healthcare management. We illustrate how TrAM serves to enrichen the requirements gathering process, whilst also supporting the definition and realisation of quantitative measures for the management of qualitative transactions.

Controladores Fuzzy para o Posicionamento Sem Bola do Goleiro no Futebol de Robôs Simulado 2D.

by Jessica Meyer

In: 5th WTICG-BASE - 5th Workshop de Trabalhos de Iniciação Científica e Graduação Bahia, Alagoas e Sergipe, 2008, Vitória da Conquista. Proceedings of the 8th Escola Regional de Computação Bahia, Alagoas e Sergipe (ERBASE), 2008. Sociedade Brasileira de Computação (SBC), Porto Alegre, 2008, vol. 1.

This paper describes a research about fuzzy controllers for the positioning of the goalkeeper without the ball in the... more This paper describes a research about fuzzy controllers for the positioning of the goalkeeper without the ball in the 2d simulated robot soccer. The goal of this research was to improve the behavior of the goalkeeper, raising the number of catches and decreasing the number of goals, improving its positioning to catch the ball. To validate the research, 30 matches were simulated against some of the best teams of the world that participate of the RoboCup. The achieved results are presented, the conclusions are discussed and future works are suggested.

Using Fuzzy Logic to Build a Heterogeneous Multiagent System for the Robotics Soccer Problem

by Jessica Meyer

Not published

This paper presents the initial research results of Bahia Robotics
Team. This is a new research group created to... more This paper presents the initial research results of Bahia Robotics
Team. This is a new research group created to investigate the application of artificial intelligence methods in the standard problem of robotics soccer.
In this work, fuzzy controllers are used to improve some abilities of the players. In the case of the attackers, the kick and the positioning ability were improved. The midfielders had their positioning and passing ability improved. The goalkeeper and the defenders had their positioning ability improved. The generated Bahia2D soccer team was tested in matches against some victorious teams from Robocup Brazil Open 2006 and from previous editions of the Robocup World Competition. The positive results achieved and the ongoing works to improve the current limitations are also presented.

Distributed architecture for intelligent robotics

by Feliz Gouveia

Agent Applications in Tourism

by Antonio Moreno

Alexandre ViejoUsing JADE-LEAP to implement agents in mobile devices

by Antonio Moreno

Agents and Clinical Guidelines: Filling the Semantic Gap

by Antonio Moreno

E-Service/Process Composition Through Multi-Agent Constraint Management

by Xiao-Feng Xie

On-demand e-supply chain integration: A multi-agent constraint-based approach

by Xiao-Feng Xie

Multi Agent Foraging-Taking a Step Further Q-Learning With Search

by Muaz Niazi

Chatter and Listening: A wireless multi-node sound sculpture

by Miles Thorogood

In Proceedings of the 2007 Australasian Computer Music Conference (ACMC), Canberra, Australia, 2007. ACMC.

Fairness in combinatorial auctioning systems

by Shrisha Rao

Air cargo demand prediction

by Shrisha Rao