A Qualitative Bipolar Argumentative View of Trust

  • Authors:
  • Henri Prade

  • Affiliations:
  • Institut de Recherche en Informatique de Toulouse (IRIT-CNRS) Universitè de Toulouse, 118 route de Narbonne 31062 Toulouse Cedex 9, France

  • Venue:
  • SUM '07 Proceedings of the 1st international conference on Scalable Uncertainty Management
  • Year:
  • 2007

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Abstract

The paper views trust as a matter of levels ranging from full trust to full distrust on a finite scale. The level of trust of an agent w. r. t. an information source or another agent may not be precisely assessed due to the lack of information. Assessing a level of trust is viewed as a decision problem, which is handled in an argumentative manner. The interest of an argumentation approach is to be able to articulate reasons for supporting trust or distrust. Moreover, the updating trust process takes advantage of the bipolar nature of the representation, and is based on information fusion methods that are able to handle conflicts. The integration of these different features provides a novel view of trust evaluation.