2013/09/19 by Federico Cerutti, Alice Toniolo, Cerutti, Federico +5
Computer Science · Social Sciences · #Access Control and Trust #Cloud Data Security Solutions #Cryptography and Data Security #FOS: Computer and information sciences #Other Computer Science (cs.OH) #cs.OH
paper · pdf · doi:10.48550/arxiv.1309.4994
19 pages, 4 figures, technical report of the University of Aberdeen (preprint version)
arxiv created 2013/09/19 · openalex publication_date 2013/09/19 · arxiv updated 2013/09/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A decision procedure implemented over a computational trust mechanism aims to allow for decisions to be made regarding whether some entity or information should be trusted. As recognised in the literature, trust is contextual, and we describe how such a context often translates into a confidence level which should be used to modify an underlying trust value. Jøsang's Subjective Logic has long been used in the trust domain, and we show that its operators are insufficient to address this problem. We therefore provide a decision-making approach about trust which also considers the notion of confidence (based on context) through the introduction of a new operator. In particular, we introduce general requirements that must be respected when combining trustworthiness and confidence degree, and demonstrate the soundness of our new operator with respect to these properties.