• Conference Object  

      Affect recognition during active game playing based on posture skeleton data 

      Zacharatos, H.; Gatzoulis, C.; Chrysanthou, Yiorgos L. (2013)
      The affective state of a player during game playing has a significant effect on the player's motivation and engagement. Recognising player's emotions during games can help game designers improve the user experience by ...
    • Conference Object  

      Argumentation Based Decision Making for Autonomous Agents 

      Kakas, Antonis C.; Moraïtis, Pavlos (2003)
      This paper presents an argumentation based framework to support the decision making of an agent within a modular architecture for agents. The proposed argumentation framework is dynamic, with arguments and their strength ...
    • Article  

      Argumentation based modelling of embedded agent dialogues 

      Dimopoulos, Yannis; Kakas, Antonis C.; Moraïtis, Pavlos (2006)
      This paper presents a novel approach to modelling embedded agent dialogues. It proposes a specific structure for the supporting information accompanying the arguments that agents exchange during a dialogue, it defines ...
    • Article  

      A distributed middleware infrastructure for personalized services 

      Dikaiakos, Marios D.; Zeinalipour-Yazdi, Constantinos D. (2004)
      In this paper, we present an overview of extensible Retrieval, Annotation and Caching Engine (eRACE), a modular and distributed intermediary infrastructure that collects information from heterogeneous Internet sources ...
    • Conference Object  

      How valuable are shopbots? 

      Markopoulos, Panos M.; Kephart, J. O. (Association for Computing Machinery, 2002)
      The price information that shopbots provide to buyers is clearly valuable, as it enables them to make a better informed choice of product and vendor. We quantify the value of this price information to the buyer in terms ...
    • Conference Object  

      Information quality evaluation for grid information services 

      Xing, Wei; Corcho, O.; Goble, C.; Dikaiakos, Marios D. (Springer Science and Business Media, LLC, 2007)
      The quality of the information provided by information services deployed in the EGEE production testbed differs from one system to another. Under the same conditions, the answers provided for the same query by different ...
    • Article  

      Monitoring disruptions in financial markets 

      Andreou, Elena; Ghysels, Eric (2006)
      We study historical and sequential CUSUM change-point tests for strongly dependent nonlinear processes. These tests are used to monitor the conditional variance of asset returns and to provide real-time information regarding ...
    • Article  

      A network game with attackers and a defender 

      Mavronicolas, Marios; Lesta, Vicky Papadopoulou; Philippou, Anna; Spirakis, Paul G. (2008)
      Consider an information network with threats called attackers
    • Conference Object  

      Personalized portals for the wireless user based on mobile agents 

      Samaras, George S.; Panayiotou, Christoforos (2002)
      Wireless users rarely (if ever) benefit from Internet information services thus requiring new type of services and new ways for structuring the needed content. Personalization appears to be the most appropriate solution ...
    • Conference Object  

      Towards a universal client for grid monitoring systems: Design and implementation of the ovid browser 

      Dikaiakos, Marios D.; Artemiou, A.; Tsouloupas, George (2006)
      In this paper, we present the design and implementation of Ovid, a browser for Grid-related information. The key goal of Ovid is to support the seamless navigation of users in the Grid information space. Key aspects of ...