To compute the trust rate TRDA in user D regarding his relationship with user A, the required calculations are as shown in Equation (7) (7)ITDA=(42×0.273)+(7×0.727)40.876×(4×0.273)+(2×0.727)41.738×(82×0.273)+(12×0.727)40.880×0.625+0.15+0.25+0.153×0.375=(0.405×0.061×0.761)×0.625+0.553×0.375=0.019×0.625+0.183×0.375=0.012+0.069=0.081.