In gray-order-whiting evaluation arithmetic,network profit of company was regarded as numeric list of reference,the scores of company′ key attributes which were provided by customers were regarded as numeric list of counting,according to Gray sequence whiting analyze,key attributes correlative to company′ trust level was sorted by influencing degree.

Research into a trust model based on subjective trust and recommendation;

Research of subjective trust valuation model;

Research of subjective trust evaluation model based on fuzzy simulation;