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:
- Some of the likelihood kernel lines are completely horizontal. That typically indicates an identification problem.
- Some of the detected modes are not at the peaks of the posterior kernel.
- 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