Setting parameters outside a mod.file

[DICKSONWALLACE]

Hi, everyone!
I want to write a matlab script which involves setting the parameters outside a mod.file by the command ‘set_param_value’, but after I reset the parameters outside the mod file, it would become the same as before when I run the mod file again. It seems that the command ‘set_param_value’ is useless because when I rerun the model, the parameters will be reset to the original values.
How can I get things in the right way?

[jpfeifer]

What exactly are you trying to do? Why do you need to set a parameter outside of a mod-file and then rerun the whole mod-file?

[DICKSONWALLACE]

I’m going to calculate the best money policy rule in order to maximize the households’ utility, so I would write a function which takes in policy parameters and gives out the utility value.

[jpfeifer]

But that does still not explain why you need to run all of Dynare again. Usually, you use something like

Optimal policy parameters in a non-linear model

You need to write an objective function and maximize it. The code for the maximization part to be added to the mod-file would be x_start=[0.01, 0.01, 0.01, 0.01]'; %define parameters to be optimized and their upper and lower bound x_opt_name={'alpha_le',0,Inf 'alpha_qky',0,Inf 'alpha_ve',0,Inf 'alpha_cg',0,Inf }; options_.nofunctions=1; options_.nograph=1; options_.verbosity=0; %set noprint option to suppress error messages within optimizer opti…