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Continuous pressure on government budgets, rapid changes in business opportunities and quick technological improvements make today's geo-information market very dynamic. This forces organisations, such as National Mapping Agencies (NMA) and GIS companies, to change the way they generate services and to adopt new working strategies. In this transition,(More)
Normative systems (norms) have been widely proposed as a technique for coordinating multi-agent systems. The automated synthesis of norms for coordination remains an open and complex problem , which we tackle in this paper. We propose a novel mechanism called IRON (Intelligent Robust On-line Norm synthesis mechanism), for the on-line synthesis of norms.(More)
Humans have developed jurisprudence as a mechanism to solve conflictive situations by using past experiences. Following this principle, we propose an approach to enhance a multi-agent system by adding an authority which is able to generate new regulations whenever conflicts arise. Regulations are generated by learning from previous similar situations ,(More)
The Microblaze is a processor designed by Xilinx that introduces an integrated single precision, IEEE-754 compatible Floating Point Unit (FPU). The MicroBlaze core is a 3-stage pipeline, 32-bit RISC Harvard architecture soft processor core with 32 general purpose registers, ALU, and an instruction set optimized for embedded applications. It supports both(More)
In this paper, we review our Multi-Agent System (MAS) architecture (2-LAMA) proposed to assist existing MAS. This architecture consists of two levels: the conventional MAS system and an additional meta-level in charge of assistance. We illustrate our approach in a Peer-to-Peer sharing network scenario and compare it with the commonly used BitTorrent(More)
Much previous research has investigated explicit, machine-process-able norms as a means to facilitate coordination in open multi-agent systems. This research can typically be classified as considering either offline design (norms are synthesised at design time) or online design. Online synthesis techniques aim to construct norms for a system while that(More)
In recent years, there has been much research on ontologies for geographic information (GI) services. But to date, focus has been on semantics of data and operations. Much less attention has been given to semantics of quality of GI services. In addressing this gap, this paper proposes an ontology framework for quality of GI services. The framework has an(More)
Norms have been extensively studied to coordinate multi-agent systems , and the literature has investigated two general approaches to norm synthesis: off-line (synthesising norms at design-time) and on-line (run-time synthesis). On-line synthesis is generally recog-nised to be appropriate for open systems, where aspects of the system remain unknown at(More)