Belief, information acquisition, and trust in multi-agent systems: a modal logic formulation
Artificial Intelligence
On principle-based evaluation of extension-based argumentation semantics
Artificial Intelligence
On the merging of Dung's argumentation systems
Artificial Intelligence
The Carneades model of argument and burden of proof
Artificial Intelligence
A Qualitative Bipolar Argumentative View of Trust
SUM '07 Proceedings of the 1st international conference on Scalable Uncertainty Management
Computational Logic in Multi-Agent Systems
From Binary Trust to Graded Trust in Information Sources: A Logical Perspective
Trust in Agent Societies
Argumentation in Artificial Intelligence
Argumentation in Artificial Intelligence
Formal trust model for multiagent systems
IJCAI'07 Proceedings of the 20th international joint conference on Artifical intelligence
On the Acceptability of Meta-arguments
WI-IAT '09 Proceedings of the 2009 IEEE/WIC/ACM International Joint Conference on Web Intelligence and Intelligent Agent Technology - Volume 02
A causal approach to nonmonotonic reasoning
Artificial Intelligence
An argument-based approach to reasoning with clinical knowledge
International Journal of Approximate Reasoning
Coalitions of arguments: A tool for handling bipolar argumentation frameworks
International Journal of Intelligent Systems
Combining statistics and arguments to compute trust
Proceedings of the 9th International Conference on Autonomous Agents and Multiagent Systems: volume 1 - Volume 1
Support in Abstract Argumentation
Proceedings of the 2010 conference on Computational Models of Argument: Proceedings of COMMA 2010
Trust Theory: A Socio-Cognitive and Computational Model
Trust Theory: A Socio-Cognitive and Computational Model
Arguing about the trustworthiness of the information sources
ECSQARU'11 Proceedings of the 11th European conference on Symbolic and quantitative approaches to reasoning with uncertainty
Argumentation-based reasoning in agents with varying degrees of trust
The 10th International Conference on Autonomous Agents and Multiagent Systems - Volume 2
Journal of Logic and Computation
Reasoning about trust using argumentation: a position paper
ArgMAS'10 Proceedings of the 7th international conference on Argumentation in Multi-Agent Systems
IJCAI'11 Proceedings of the Twenty-Second international joint conference on Artificial Intelligence - Volume Volume One
Attack semantics for abstract argumentation
IJCAI'11 Proceedings of the Twenty-Second international joint conference on Artificial Intelligence - Volume Volume One
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Trust is used to minimise the uncertainty in the interactions of the agents especially in case of conflicting information from different sources. Besides conflicts among information there can also be conflicts about the trust attributed to the information sources. In this paper, we discuss how to reason about trust using argumentation theory, so to express also the possibly conflicting motivations about trust and distrust. The methodology of meta-argumentation allows us to model both information and information sources as arguments and to argue about them. First, we present a model for representing evidence provided as motivation of the sources' arguments to represent the need of a trusted source to believe the information, and we show how to model the information sources in a way that it can be argued whether they should be considered trustworthy or not. Second, we provide a focused representation of trust about the sources in which trust concerns not only the sources but also the information items and the relation with other information. Third, we introduce the feedback on the trustworthiness of the sources and the information items they propose, such that an attack to the trustworthiness of the items feeds back on the trustworthiness of the source. Finally, we distinguish two dimensions of trust, namely competence and sincerity, and we present a formal way to express those dimensions, only informally described in the socio-cognitive models of trust.