Hi,
I’m having some troubles with estimating a baseline version of the RBC-model i Dynare on empirical data (i.e. “baseline_data” file).
Can someone please help me why Dynare failure to calculate the estimated model?
Thanks for taking your time.
/Helena
romer_estimation.mod (1.2 KB)
Baseline_data.xlsx (12.1 KB)
Before moving to estimation, make sure you can simulate the model. For example, I am pretty sure the timing of capital in
c = w*lab+(r+1-cdelta)*k - k(-1);
is wrong.
I can simulate the model with no problems 
How? model_diagnostics complains about k not being present at time t.
Thanks for your input - the results changes especially the impulse response functions. Hence i still have implications with estimation on empirical data
Do you still have the steady_state_model-block in your mod-file?
Above i estimated the model with the “steady” command and no “steady_state_model-blok”. Hence I tried again with the steady_state_model-blok where i obtain this
Error using print_info (line 32)
The steadystate file did not compute the steady state
romer_estimation.mod (1.6 KB)
Use romer_estimation.mod (1.6 KB)
steady will not work without proper initial values. Now your data treatment looks wrong. See Pfeifer(2013): “A Guide to Specifying Observation Equations for the Estimation of DSGE Models”
If you really want 8 observables, you need at least 8 shocks. You may still get a problem with stochastic singularity if you don’t have some measurement error. All of that is detailed in the guide linked above.
Yes that was also my thoughts - thank for providing me feedback, I really appreciate your help.
I have now declared 2 observable variables and 2 shocks where some of the estimation process succeed but I estimate a negative matrix <0 .
“Error using chol
Matrix must be positive definite.”
How is it possible to correct for this? I tried to look at your guide but with no success.
romer_estim_old.mod (1.6 KB)
The data file is missing.
sorry for the many questions but i don’t understand how the data file can be missing when i have declared the data file in the estimation-block and the program are able to estimate part of the code?
Thanks for taking your time to help me!
romer_estim_old.mod (1.6 KB)
What error message do you get? Note that programming languages are case-sensitive. Your Excel-file starts with a capital letter.
POSTERIOR KERNEL OPTIMIZATION PROBLEM!
MODE CHECK
Fval obtained by the minimization routine (minus the posterior/likelihood)): 13.409097
Warning: Matrix is singular, close to singular or badly scaled. Results may be
*inaccurate. RCOND = NaN. *
> In dynare_estimation_1 (line 338)
Log data density [Laplace approximation] is NaN.
Error using chol
Matrix must be positive definite.
Error in posterior_sampler_initialization (line 84)
d = chol(vv);
Error in posterior_sampler (line 60)
Error in dynare_estimation_1 (line 465)
posterior_sampler(objective_function,posterior_sampler_options.proposal_distribution,xparam1,posterior_sampler_options,bounds,dataset_,dataset_info,options_,M_,estim_params_,bayestopt_,oo_);*
Error in dynare_estimation (line 105)
Error in romer_estim_old.driver (line 247)
oo_recursive_=dynare_estimation(var_list_);
Error in dynare (line 293)
evalin(‘base’,[fname ‘.driver’]) ;
I’m trying to estimate the model with more than one observable variables (y_obs and c_obs) - when i estimate with only y_obs i receive no error messages so i think it could be in the definition of the additional shock variable/equation where it goes wrong.
Thanks!
Please provide the most recent mod-file and data-file
I am not sure what you are doing.
log(cA) = rhov*(cA(-1))+epsv;
rhov is clearly not identified as you are neither observing cA nor is cA affecting any other part of the model.