Lillis, David

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Lillis, David
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Lillis, David

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  • Publication
    Hybrid agent & component-based management of backchannels
    (2009-07)
    Dragone, Mauro 
    ;
    O'Hare, G. M. P. (Greg M. P.) 
    ;
    Lillis, David 
    ;
    Collier, Rem 
    This paper describes the use of the SoSAA software framework to implement the hybrid management of communication channels (backchannels) across a distributed software system. SoSAA is a new integrated architectural solution enabling context-aware, open and adaptive software while preserving system modularity and promoting the re-use of existing component-based and agent-oriented frameworks and associated methodologies. In particular, we show how SoSAA can be used to orchestrate the adoption of network adapter components to bind functional components that are distributed across different component contexts. Both the performance of the different computational nodes involved and the efficiencies and faults in the underlying transport layers are taken into account when deciding which transport mechanisms to use.
      422
  • Publication
    Separation of concerns in hybrid agent and component system
    (Inderscience Publishers, 2011)
    Dragone, Mauro 
    ;
    Jordan, Howell 
    ;
    Lillis, David 
    ;
    Collier, Rem 
    Modularising requirements is a classic problem of software engineering; concerns often overlap, requiring multiple dimensions of decomposition to achieve separation. Whenever complete modularity is unachievable, it is important to provide principled approaches to the decoupling of concerns. To this end, this paper discusses the Socially Situated Agent Architecture (SoSAA) - a complete construction methodology, which leverages existing well established research and associated methodologies and frameworks in both the Agent-oriented and Component-based Software Engineering domains. As a software framework, SoSAA is primarily intended to serve as a foundation on which to build agent based applications by promoting separation of concerns in the development of open, heterogeneous, adaptive and distributed systems. While previous work has discussed the design rationale for SoSAA and illustrated its application to the construction of multiagent systems, this paper focuses on the separation of concerns issue. It highlights concerns typically addressed in the development of distributed systems, such as adaptation, concurrency, fault-tolerance. It analyses how a hybrid agent/component integration approach can improve the separation of these concerns by leveraging modularity constructs already available in agent and component systems, and sets clear guidelines on where the different concerns must be addressed within the overall architecture. Finally, this paper provides a first evaluation of the application of our framework by applying well- known metrics to a distributed information retrieval case study, and by discussing how this initial results can be projected to a typical multiagent application developed with the same hybrid approach.
      920Scopus© Citations 2
  • Publication
    SoSAA : a framework for integrating components & agents
    (ACM Press, 2009)
    Dragone, Mauro 
    ;
    Lillis, David 
    ;
    Collier, Rem 
    ;
    O'Hare, G. M. P. (Greg M. P.) 
    Modern computing systems require powerful software frameworks to ease their development and manage their complexity. These issues are addressed within both Component-Based Software Engineering and Agent-Oriented Software Engineering, although few integrated solutions exist. This paper discusses a novel integration strategy, which builds upon both paradigms to address their shortcomings while leveraging their different characteristics to define a complete software framework.
      1074Scopus© Citations 18