Error in computing likelihood for initial parameter values

Dynare help (legacy posts)
1

hey,guys.I update my question asked last week here.When I estimated a BGG model with heterogeneous firms,dynare warned me that
Error in computing likelihood for initial parameter values
??? Error using ==> print_info
Blanchard Kahn conditions are not satisfied: indeterminacy
Error in ==> initial_estimation_checks at 87
print_info(info)
Error in ==> dynare_estimation_1 at 320
initial_estimation_checks(xparam1,gend,data);
Error in ==> dynare_estimation at 62
dynare_estimation_1(var_list,varargin{:});
Error in ==> bbgg at 324
dynare_estimation(var_list_);
Error in ==> dynare at 102
evalin(‘base’,fname) ;

Is this mean that the prior means of the paremeters I choosed are not proper for the model? So what should I do next? Thank you for your help.I attached my codes and data file here.
try1.xls (15 KB)
bbgg.mod (3.38 KB)

2

try using estimated_param_init to define the start for estimation… try specifing other values that mean of priors.

3

the prior means do not satify blanchard kahn condition… try finding a set of parameters that do… you also misstyped at priors nu1 twice… check it… there are some parameters you dont use in model, like sig_g or sig_a… also the prior for

sig_r,inv_gamma_pdf,0.01,inf; is not good if you specifiy first that sig_r=2.01… probably the value 0.01 is not good for steady state… try

also pecify sheet name and rage when reading from excel…

try reading data from mat file

4

Hi,coot!Thank you for your help!I think the programe has improved after I corrected my typo that you mentioned and change the std of rn to 2.01.But there is a new problem,dynare told me that
??? Error using ==> DiffuseLikelihood1
The variance of the forecast error remains singular until theend of the sample

Error in ==> DsgeLikelihood at 305
LIK = DiffuseLikelihood1(T,R,Q,Pinf,Pstar,data,trend,start);

Error in ==> initial_estimation_checks at 58
[fval,cost_flag,ys,trend_coeff,info] = DsgeLikelihood(xparam1,gend,data);

Error in ==> dynare_estimation_1 at 320
initial_estimation_checks(xparam1,gend,data);

Error in ==> dynare_estimation at 62
dynare_estimation_1(var_list,varargin{:});

Error in ==> bbgg at 318
dynare_estimation(var_list_);

Error in ==> dynare at 102
evalin(‘base’,fname) ;
Does this mean that there is something wrong with my data? The data is stationary however.So what should I do next?Thanks for hlep

5

You also did not specify shock variances as there is no shocks-statement. The attached version runs for me. Note that the standard errors are arbitrarily set.
bbgg.mod (3.72 KB)

6

Thanks very much for the help,now the code can run successfully.But when I run the code ,sometimes it can give me the estimated result,but sometimes it warned me that
??? Error using ==> chol
Matrix must be positive definite.
Error in ==> gmhmaxlik at 100
dd = transpose(chol(CovJump));
Error in ==> dynare_estimation_1 at 484
[xparam1,PostVar,Scale,PostMean] = …
Error in ==> dynare_estimation at 62
dynare_estimation_1(var_list,varargin{:});
Error in ==> bbgg1 at 335
dynare_estimation(var_list_);
Error in ==> dynare at 102
evalin(‘base’,fname) ;
Why does this happen?And what should I do ? Thank you very much.

7

try searching for your error on the forum… it is explained… some time optimization routines do not get the results… it happens just sometimes because as I understood there is some randomness involved in optimization routiness… if you want not to get it try using mode_compute=6 in your estimation but note that this is not an optimization routine or a very inefficient one… read dynare wiki for mode_compute=6 and search the forum for your error related to chol