Abstract
It is suggested that the use of the semiotic ladder, together with a supportive trust agent can be used together to better explicate “soft” trust issues in the context of Grid services. The contribution offered here is intended to fill a gap in current understanding and modelling of such issues and to support Grid service designers to better conceptualise, hence manage trust issues. The semiotic paradigm is intended to offer an integrative viewpoint within which to explicate “soft” trust issues throughout the Grid life-cycle. A computationally lightweight trust agent is described that can be used to verify high level trust of a Virtual Organisation. The potential benefits of the approach that is advocated here include the reduction of risk and potential improvements in the quality and reliability of Grid service partnerships. For these benefits to accrue, explicit “soft” as well as “hard” trust management is essential as is an integrative viewpoint.
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