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在进行贝叶斯估计DSGE模型时也遇到此问题。主要还是参数的稳态值设定不对。像C/Y之类的可以使用历史数据的比值校准,但单独的C或者Y之类的值究竟应该怎么校准呢?请教大家。
POSTERIOR KERNEL OPTIMIZATION PROBLEM!
(minus) the hessian matrix at the "mode" is not positive definite!
=> posterior variance of the estimated parameters are not positive.
You should try to change the initial values of the parameters using
the estimated_params_init block, or use another optimization routine.
Warning: The results below are most likely wrong!
> In dynare_estimation_1 at 694
In dynare_estimation at 89
In dsge_esti at 549
In dynare at 180
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