Now showing items 1-6 of 6

  • An analysis of online Twitter sentiment surrounding the European refugee crisis 

    Pope, David; Griffith, Josephine (SciTePress Digital Library, 2016)
    Using existing natural language and sentiment analysis techniques, this study explores different dimensions of mood states of tweet content relating to the refugee crisis in Europe. The study has two main goals. The first ...
  • Cyclic dominance in the spatial coevolutionary optional prisoner's dilemma game 

    Cardinot, Marcos; O'Riordan, Colm; Griffith, Josephine (CEUR-WS.org, 2016-09-20)
    This paper studies scenarios of cyclic dominance in a coevolutionary spatial model in which game strategies and links between agents adaptively evolve over time. The Optional Prisoner’s Dilemma (OPD) game is employed. ...
  • Evolution of cooperation in N-player social dilemmas: The importance of being mobile 

    Gibbons, Maud D.; O'Riordan, Colm; Griffith, Josephine (SciTePress Digital Library, 2016)
    This paper addresses issues regarding the emergence of cooperation in evolutionary, spatial game-theoretic simulations. In the model considered, agents participate in a social dilemma with their neighbours and have the ...
  • An evolutionary approach to formation control with mobile robots 

    Holland, Jane; Griffith, Josephine; O'Riordan, Colm (SciTePress Digital Library, 2016)
    The field of swarm robotics studies multi-robot systems, emphasising decentralised and self-organising behaviours that deal with limited individual abilities, local sensing and local communication. A robotic system needs ...
  • Evolving collective behaviours in simulated kilobots 

    Holland, Jane; Griffith, Josephine; O'Riordan, Colm (Association for Computing Machinery, 2018-04-09)
    The field of Evolutionary Robotics has multiple common tasks and widely used benchmark activities such as navigation, obstacle avoidance, and phototaxis. We present an evolutionary approach to learning behaviours that ...
  • The optional prisoner's dilemma in a spatial environment: Co-evolving game strategy and link weights 

    Cardinot, Marcus; O'Riordan, Colm; Griffith, Josephine (SciTePress Digital Library, 2016)
    In this paper, the Optional Prisoner’s Dilemma game in a spatial environment, with coevolutionary rules for both the strategy and network links between agents, is studied. Using a Monte Carlo simulation approach, a number ...