in this article a graph theoretical approach is employed to study some specifications of dynamic systems with time delay in the inputs and states, such as structural controllability and observability. first, the zero and non-zero parameters of a proposed system have been determined, next the general structure of the system is presented by a graph which is constructed by non-zero parameters. the...

this paper deals with leader-following and leaderless consensus problems of high-order multi-input/multi-output (mimo) multi-agent systems with unknown nonlinear dynamics in the presence of uncertain external disturbances. the agents may have different dynamics and communicate together under a directed graph. a distributed adaptive method is designed for both cases. the structures of the contro...

In the aim of providing sophisticated applications and getting benefits from the advantageous properties of agents, designing agent-based and multi-agent systems has become an important issue that received further consideration from many application domains. Towards the same goal, this work gathered three different research fields; image segmentation, fuzzy clustering and multi-agent systems (M...

Multi-agent systems (MAS) are increasingly used in critical applications. To ensure dependability of MAS, we need powerful development techniques that would allow us to master complexity inherent to MAS and formally verify correctness and safety of collaborative agent activities. In this paper we present a rigorous approach to development and verification of critical MAS in Event-B. We demonstr...

Multi-agent systems have proven to be a powerful technology because of their many advantages in distributed and complex environments however its disadvantage is that is lacks the interconnection with semantic web standards. In this paper we propose a new approach to enhance the interoperability and cooperation of Multi-Agent System (MAS) using semantic web technology (such as RDF and OWL) and w...

An approach to the pre-runtime design of normative systems for problem-solving multi-agent systems (MAS) is suggested. A key element of this approach is to employ evolutionary mechanisms to evolve efficient normative systems. To illustrate, a genetic algoritm is used in the process of designing a normative system for an example MAS based on the Dalmas architecture for normregulated MAS. It is d...

In Multi-Agent System (MAS), developers concentrate on creating design models and evolving them, from higher level models to lower level models, in several steps. Considerable part of MAS implementations is automatically produced from the design models. If a design model contains faults, they are passed to the generated implementations. Practical model validation techniques are required to disc...

There have been tremendous advances in the last decade in the theory and implementation of massive multi-agent systems. However, one major obstacle to the wider deployment of multi-agent systems (MASs) is their capability of tolerating failures. MASs that are deployed across a network can quickly “go down” due to external factors such as power failures, network outages, malicious attacks, and o...

This paper presents a conceptual model of an agent (called Collaborator Agent) intended to design collaborative software architectures based on multi-agent systems. The authors’ model combines astutely two research areas: Multi-Agent Systems (MAS) and Computer Supported Cooperative Work (CSCW). The particularity of their approach is the division of the collaborative process into three spaces ac...

Online Communities are an example of sociallyaware, self-organising, complex adaptive computing systems. The multi-agent systems (MAS) paradigm coordinated by self-organisation mechanisms has been used as an effective way for the simulation and modeling of such systems. In this paper, we propose a model for simulating an online health community using a situated multi-agent system approach, gove...