Blanchard Kahn Indeterminancy

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Blanchard Kahn Indeterminancy

Postby jloree » Sat Nov 05, 2016 3:13 pm

Hello All,

I have a relatively simple RBC model I am attempting to estimate, in which the only difference from the benchmark is that the share of labour in production follows a shock process. However, I am getting an error of:

Error using print_info (line 45)
Blanchard Kahn conditions are not satisfied: indeterminacy

Error in stoch_simul (line 98)
print_info(info, options_.noprint, options_);

Error in modfile1 (line 143)
info = stoch_simul(var_list_);

Error in dynare (line 180)
evalin('base',fname) ;

From what I can tell, this is usually due to time inconsistency, but I only have a few equations and it seems correct. Would appreciate any insight.
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modfile1.mod
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jloree
 
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Re: Blanchard Kahn Indeterminancy

Postby jpfeifer » Sat Nov 05, 2016 4:52 pm

You forgot to log the steady state of alpha when writing it as a log-process. It should be
Code: Select all
alpha=gamma*alpha(-1) + (1-gamma)*log(alphabar) + e_alpha;

not
Code: Select all
alpha=gamma*alpha(-1) + (1-gamma)*alphabar + e_alpha;

because otherwise in steady state
k^(exp(alphabar))
------------
Johannes Pfeifer
University of Cologne
https://sites.google.com/site/pfeiferecon/
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Location: Cologne, Germany

Re: Blanchard Kahn Indeterminancy

Postby jloree » Sat Nov 05, 2016 5:03 pm

Thank you, totally solved my problem.
jloree
 
Posts: 2
Joined: Sat Nov 05, 2016 3:06 pm


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