Liar liar, pants on fire; or how to use subjective logic and argumentation to evaluate information from untrustworthy sources

  • Andrew Koster
  • Ana L. C. Bazzan
  • Marcelo de Souza

DOI: 10.1007/s10462-016-9499-1

Cite this article as:
Koster, A., Bazzan, A.L.C. & de Souza, M. Artif Intell Rev (2016). doi:10.1007/s10462-016-9499-1


This paper presents a non-prioritized belief change operator, designed specifically for incorporating new information from many heterogeneous sources in an uncertain environment. We take into account that sources may be untrustworthy and provide a principled method for dealing with the reception of contradictory information. We specify a novel Data-Oriented Belief Revision Operator, that uses a trust model, subjective logic, and a preference-based argumentation framework to evaluate novel information and change the agent’s belief set accordingly. We apply this belief change operator in a collaborative traffic scenario, where we show that (1) some form of trust-based non-prioritized belief change operator is necessary, and (2) in a direct comparison between our operator and a previous proposition, our operator performs at least as well in all scenarios, and significantly better in some.


Multi-agent systems Non-prioritized belief revision Car-to-car communication Information fusion 

Copyright information

© Springer Science+Business Media Dordrecht 2016

Authors and Affiliations

  1. 1.
  2. 2.Federal University of Rio Grande do SulPorto AlegreBrazil
  3. 3.Santa Catarina State UniversityIbiramaBrazil

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