two warnings during dynare stoch_simul
Posted: Mon Aug 15, 2016 8:01 am
Hi all,
My .mod file ends with
The code goes through well except two earnings. The printout screen looks like:
MODEL SUMMARY
nothing special here
MATRIX OF COVARIANCE OF EXOGENOUS SHOCKS
nothing special here
POLICY AND TRANSITION FUNCTIONS
nothing special here
Warning: Matrix is close to singular or badly scaled. Results may be
inaccurate. RCOND = 1.451571e-18.
> In th_autocovariances at 149
In disp_th_moments at 37
In stoch_simul at 164
In modfilename at 687
In dynare at 180
Warning: Aggregate variance and sum of variances by shocks differ by more than
0.01 %
> In th_autocovariances at 198
In disp_th_moments at 37
In stoch_simul at 164
In modfilename at 687
In dynare at 180
APROXIMATED THEORETICAL MOMENTS
some "NAN"s
APPROXIMATED VARIANCE DECOMPOSITION (in percent)
nothing special here
APPROXIMATED MATRIX OF CORRELATIONS
nothing special here
APPROXIMATED COEFFICIENTS OF AUTOCORRELATION
nothing special here
In the model, one variable follows random walk, and some variables are functions of this random walk.
1. I guess that APROXIMATED THEORETICAL MOMENTS have NAN because of the random walk.
2. I'm not sure how the first warning affects the model's performance. Is it a red flag? Is it due to random walk variable?
3. As for the second warning, I find the post viewtopic.php?f=1&t=4409 very useful. It says that this warning may come from the large size of my model, and it's not avoidable. I wonder whether the random walk behavior of endogenous variable will contribute to this warning.
Thanks very much for your help!
My .mod file ends with
- Code: Select all
stoch_simul(order=2, pruning,irf=30, nograph);
The code goes through well except two earnings. The printout screen looks like:
MODEL SUMMARY
nothing special here
MATRIX OF COVARIANCE OF EXOGENOUS SHOCKS
nothing special here
POLICY AND TRANSITION FUNCTIONS
nothing special here
Warning: Matrix is close to singular or badly scaled. Results may be
inaccurate. RCOND = 1.451571e-18.
> In th_autocovariances at 149
In disp_th_moments at 37
In stoch_simul at 164
In modfilename at 687
In dynare at 180
Warning: Aggregate variance and sum of variances by shocks differ by more than
0.01 %
> In th_autocovariances at 198
In disp_th_moments at 37
In stoch_simul at 164
In modfilename at 687
In dynare at 180
APROXIMATED THEORETICAL MOMENTS
some "NAN"s
APPROXIMATED VARIANCE DECOMPOSITION (in percent)
nothing special here
APPROXIMATED MATRIX OF CORRELATIONS
nothing special here
APPROXIMATED COEFFICIENTS OF AUTOCORRELATION
nothing special here
In the model, one variable follows random walk, and some variables are functions of this random walk.
1. I guess that APROXIMATED THEORETICAL MOMENTS have NAN because of the random walk.
2. I'm not sure how the first warning affects the model's performance. Is it a red flag? Is it due to random walk variable?
3. As for the second warning, I find the post viewtopic.php?f=1&t=4409 very useful. It says that this warning may come from the large size of my model, and it's not avoidable. I wonder whether the random walk behavior of endogenous variable will contribute to this warning.
Thanks very much for your help!