• Article  

      Implementing QoS aware component-based applications 

      Chimaris, Avraam N.; Papadopoulos, George Angelos (2004)
      By QoS (Quality of Service), we often refer to a set of quality requirements on the collective behavior of one or more objects. These requirements enable the provision of better service to certain data flows. The developer ...
    • Conference Object  

      Layered strategies and protocols for argumentation-based agent interaction 

      Kakas, Antonis C.; Maudet, N.; Moraïtis, Pavlos (2005)
      Communication between agents needs to be flexible enough to encompass together a variety of different aspects such as, conformance to society protocols, private tactics of the individual agents, strategies that reflect ...
    • Conference Object  

      Multi-agent coordination and cooperation through classical planning 

      Dimopoulos, Yannis; Moraïtis, Pavlos (2007)
      Multi-agent planning is a fundamental problem in multiagent systems that has acquired a variety of meanings in the relative literature. In this paper we focus on a setting where multiple agents with complementary capabilities ...
    • Conference Object  

      Multiagent reinforcement learning in the iterated prisoner's dilemma: Fast cooperation through evolved payoffs 

      Vassiliades, Vassilis; Christodoulou, Chris C. (2010)
      In this paper, we investigate the importance of rewards in Multiagent Reinforcement Learning in the context of the Iterated Prisoner's Dilemma. We use an evolutionary algorithm to evolve valid payoff structures with the ...
    • Article  

      Multiagent reinforcement learning: Spiking and nonspiking agents in the Iterated Prisoner's Dilemma 

      Vassiliades, Vassilis; Cleanthous, A.; Christodoulou, Chris C. (2011)
      This paper investigates multiagent reinforcement learning (MARL) in a general-sum game where the payoffs' structure is such that the agents are required to exploit each other in a way that benefits all agents. The contradictory ...
    • Conference Object  

      A performance analysis framework for mobile agent systems 

      Dikaiakos, Marios D.; Samaras, George S. (Springer Verlag, 2001)
      In this paper we propose a novel performance analysis ap- proach that can be used to gauge quantitatively the performance char- acteristics of different mobile-agent platforms. We materialize this ap- proach as a hierarchical ...
    • Conference Object  

      Personalized portals for the wireless and mobile user 

      Panayiotou, Christoforos; Samaras, George S. (2003)
      The Wireless environment requires new type of services and new ways for structuring the needed content. Personalization comes into aid via the creation of personalized portals that directly tones down factors that break ...
    • Article  

      The scientific contribution of marek sergot 

      Barker, S.; Jones, A. J. I.; Kakas, Antonis C.; Kowalski, R. A.; Lomuscio, A.; Miller, R.; Muggleton, S.; Sartor, G. (2012)
      Marek Sergot's technical contributions range over different subjects. He has developed a series of novel ideas and formal methods bridging different research domains, such as artificial intelligence, computational logic, ...
    • Article  

      Some theoretical results on the relationship between argumentation and coherence theory 

      Dimopoulos, Yannis; Moraïtis, Pavlos; Sierra, C. (2017)
      This work provides initial results on the relationship between argumentation and Paul Thagard’s coherence theory. We study the relationship, via appropriate transformations, between different types of coherent graphs ...
    • Article  

      Structural controllability and observability of linear systems over finite fields with applications to multi-agent systems 

      Sundaram, S.; Hadjicostis, Christoforos N. (2013)
      We develop a graph-theoretic characterization of controllability and observability of linear systems over finite fields. Specifically, we show that a linear system will be structurally controllable and observable over a ...
    • Article  

      Tactics and concessions for argumentation-based negotiation 

      Hadidi, N.; Dimopoulos, Yannis; Moraïtis, Pavlos (2012)
      Argumentation-based negotiation has gained increasing prominence in the multi-agent field over the last years. There is currently a long literature on the use of argumentation in negotiation and especially the modeling of ...
    • Conference Object  

      A unified and general framework for argumentation-based negotiation 

      Amgoud, L.; Dimopoulos, Yannis; Moraïtis, Pavlos (2007)
      This paper proposes a unified and general framework for argumentation-based negotiation, in which the role of argumentation is formally analyzed. The framework makes it possible to study the outcomes of an argumentation-based ...
    • Article  

      μ-SATPLAN: Multi-agent planning as satisfiability 

      Dimopoulos, Yannis; Hashmi, M. A.; Moraïtis, Pavlos (2012)
      Planning is a fundamental issue in multi-agent systems. In this work we focus on the coordination of multiple agents in two different settings. In the first, agents are able to attain individual goals that are necessary ...