利用贝叶斯原理估计混合logit模型的参数，已调制信号计算其普相关密度，中介真值程度度量，基于中介真值程度度量的图像分。- Bayesian parameter estimation principle mixed logit model, Modulated signals to calculate its density Pu-related, The true extent of the value of the intermediary measure, measure the true