This paper introduces the T-compound, an agent interaction pattern we propose as reusable architecture in the design of multi-agent systems. We explain why this model and its underlying concept of overhearing are relevant and specific to agents. Then, we describe two strategies of implementation, together with their qualities and weaknesses. We then identify the T-compound in various agent-base...

Architecture-centric software evolution enables change in a system’s structure and behaviour while maintaining a global view of the software to address evolution-centric tradeoffs. The existing solutions for architectural maintenance and evolution fall short of exploiting generic and reusable expertise to address recurring evolution problems. We present a pattern language as a collection of int...

A mobile agent based framweork for the transparant distribution and concurrent execution of computations is presented. The framework uses design patterns like the master-slave, abstract factory or the strategy pattern. The architecture of the framework is built on top of a mobile agent system. A performance model allows to identify performance bottlenecks and unbalanced situations within the fr...

We present a new way to compute the aane curvature of plane curves. We explain how an aane scale-space can be used to gain one order of derivation in the numerical approximation of aane curvature. We outline our implementation and compare our results with previous ones. This paper ends by showing a simple application in pattern recognition using aane curvature.

An extremely large body of theoretical work exists on pattern formation, but very few experimental results have confirmed the relevance of theoretical models. It is argued in this article that the notion of agent-based pattern formation, which is introduced and exemplified, can serve as a basis to study pattern formation in nature, especially because pattern-forming systems based on agents are ...

Components-based development is promising in improving software development productivity and software quality by re-using existing well-tested software components. However, one of the challenges of component-based development is how to integrate various components in software systems. In this paper, an approach is presented to apply design patterns to component integration. This approach uses a...

Facial expressions play an essential role in communications in social interactions with other human beings which deliver rich information about their emotions. Here, we propose an efficient method for identifying the expressions of the students to recognize their comprehension from the facial expressions in static images containing the frontal view of the human face. Our goal is to categorize t...

A mobile agent based framweork for the transparant distribution and concurrent execution of computations is presented. The framework uses design patterns like the master-slave, abstract factory or the strategy pattern. The architecture of the framework is built on top of a mobile agent system. A performance model allows to identify performance bottlenecks and unbalanced situations within the fr...