I am learning Bayesian Model Updating and using DRAM sampling method to solve posterior PDF, I have trouble in DRAM method. The issue is : The matlab program I used is open source you uploaded, then I changed it according to my case(total 6 parameters to be updated),I have verified my program for 2 parameters, it works well. However, when the number of parameters are 6, samples are not taken to convergence. The prior I used is gaussian distribution with infinit variance (so the prior can be seen as noninformative prior), I also set parameters interval, initial value, qcov, drscale and other DRAM setting, but results are still awful.Does anybody do DRAM sampling method before? Thanks!