Evidence-based trust

• DOI: 10.1145/1867713.1867715
• Publication Date: 2010-11-23T15:00:38Z
• Authors: Yonghong Wang; Munindar P. Singh
• Keywords: Certainty; Trustworthiness

An evidence-based account of trust is essential for an appropriate treatment application-level interactions among autonomous and adaptive parties. Key examples include social networks service-oriented computing. Existing approaches either ignore evidence or only partially address the twin challenges mapping to trustworthiness combining reports from imperfectly trusted sources. This article develops a mathematically well-formulated approach that naturally supports discounting reports. understands agent Alice's in Bob terms certainty her belief trustworthy. Unlike previous approaches, this formulates based on statistical measure defined over probability distribution positive outcomes. definition important mathematical properties ensuring correct results despite conflicting evidence: (1) fixed amount evidence, increases as conflict decreases (2) level conflict, increases. Moreover, subtle certainty, work (3) establishes bijection between spaces, enabling robust combination (4) provides efficient algorithm computing bijection.