“…Recently, trust was introduced in the concept of social cloud [20,21,22,23,24,25,26,27,28]. Trust is also introduced in cyber-physical and edge computing systems, e.g., wireless sensor networks [29,30,31,32,33,34,35,36,37,38] and vehicular networks [39,40,41,42]. Another important domain in which trust analysis is widely applied is Sybil defense and spam detection [43,3,44,16,45].…”