Subjective logic and arguing with evidence

  • Authors:
  • Nir Oren;Timothy J. Norman;Alun Preece

  • Affiliations:
  • Department of Computing Science, University of Aberdeen, AB24 3UE, Scotland, UK;Department of Computing Science, University of Aberdeen, AB24 3UE, Scotland, UK;Department of Computing Science, University of Aberdeen, AB24 3UE, Scotland, UK

  • Venue:
  • Artificial Intelligence
  • Year:
  • 2007

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Abstract

This paper introduces a subjective logic based argumentation framework primarily targeted at evidential reasoning. The framework explicitly caters for argument schemes, accrual of arguments, and burden of proof; these concepts appear in many types of argument, and are particularly useful in dialogues revolving around evidential reasoning. The concept of a sensor is also useful in this domain, representing a source of evidence, and is incorporated in our framework. We show how the framework copes with a number of problems that existing frameworks have difficulty dealing with, and how it can be situated within a simple dialogue game. Finally, we examine reasoning machinery that enables an agent to decide what argument to advance with the goal of maximising its utility at the end of a dialogue.