Trust Trust Me (The Additivity)

Conference object English OPEN
Mano , Ken ; Sakurada , Hideki ; Tsukada , Yasuyuki (2017)
  • Publisher: Springer International Publishing
  • Related identifiers: doi: 10.1007/978-3-319-59171-1_11
  • Subject: Trust | Protocol | Metric | Soundness | [ INFO ] Computer Science [cs] | Subjective logic | Stability
    arxiv: Computer Science::Cryptography and Security
    acm: Data_MISCELLANEOUS

Part 4: Trust Metrics; International audience; We present a mathematical formulation of a trust metric using a quality and quantity pair. Under a certain assumption, we regard trust as an additive value and define the soundness of a trust computation as not to exceed the total sum. Moreover, we point out the importance of not only soundness of each computed trust but also the stability of the trust computation procedure against changes in trust value assignment. In this setting, we define trust composition operators. We also propose a trust computation protocol and prove its soundness and stability using the operators.
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