About Mode check plots

Hello dear professor, I have always been a little confused about Mode check plots, is such a graph considered acceptable? How can I tell if this Mode check plots passes or not? Big red dots indicate parameter values for which the model could not be solved due to e.g. violations of the Blanchard-Kahn
conditions,so there’s a big red dot, isn’t it? Do I need to rescale the mh_jscale?

No, these plots do not look good. A couple of things:

  1. Some of the likelihood kernel lines are completely horizontal. That typically indicates an identification problem.
  2. Some of the detected modes are not at the peaks of the posterior kernel.
  3. Having red dots in the parameter space is not unusual, but it’s problematic if the cause a corner solution instead of an interior solution.

Well received, thank you very much