Skip to main content

Table 2 Values of used parameters

From: A decentralized trustworthiness estimation model for open, multiagent systems (DTMAS)

Parameter Value  
Working area diminutions 1000 X 1000  
Total number of TE 12  
Total number of TR 81  
Zone radius 3  
Number of contacts 5  
direct communication radius 100  
MaxMove 707.1  
Depth of contacts’ level 2  
Number of TE changing behavior 7  
Number of context categories 10  
Basic suspension interval 10  
Number of utility gain categories 9  
Witnesses changing behavior 10  
Witnesses always report negative 7  
Witnesses always report positive 7  
Witnesses report neutral 50% 7  
Witnesses always lie 7  
Maximum utility gain 10  
Inerval of TE changing behavior 10  
TE cooperation factor 0.01  
TR non-cooperation factor -0.03  
Witnesses cooperation factor 0.01  
Witnesses non-cooperation factor -0.03  
Direct trust fraction 0.5  
Degree of decay 0.01  
HT 0.5  
FT -0.5  
WHT 0.5  
WFT -0.5  
ST 0  
WDT 0.5  
FIRE -Specific Parameters  
Local rating history size 10  
DT recency scaling factor -(5/ ln(0.5))  
Branching factor 2  
Referral length threshold 5  
Interaction trust coefficient 2  
Role-base trust coefficient 2  
Witness reputation coefficient 1  
Certified reputation coefficient 0.5  
Reliability function parameter: Interaction trust -ln(0.5)  
Reliability function parameter: Role-base trust -ln(0.5)  
Reliability function parameter: Witness reputation -ln(0.5)  
Reliability function parameter: Certified reputation -ln(0.5)