Low acceptance ratio in MCMC

Hello! What is the reason for the low acceptance ratio (0.1 or 0.01 → closed to 0) in the MCMC algorithm and how can this error be fixed?

The reason is that the proposal has too large of a variance for your problem. To fix it, you can call estimation using something like

estimation(order=1, datafile='dsgedata.csv', mh_replic=20000, mh_nblocks=4, mh_jscale=5.) ;

and set mh_jscale to something lower than what is currently being used (1.0 by default, I believe).