On Trust Confusional, Trust Ignorant, and Trust Transitions
This paper introduces a two-dimensional representation for trust values that uses two metrics: “trust” and “distrust.” With this representation, we can deal with such contradictory arguments as “The message is basically trustworthy but simultaneously not trustworthy.” Such situations can be caused when a message is consistent with other messages, but the message is sent from an unknown sender. We also explore how to analyze the transitions of two-dimensional trust values with a theory of distributed algorithms and compare our trust representation with Jøsang’s subjective logic.
KeywordsTwo-dimensional trust representation Fuzzy logic I/O-automaton theory Safety/liveness properties Subjective logic
This work was supported by the National Institute of Information and Communications Technology in Japan (Contract No. 193).
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