Prof. Pfeifer, is this the standard procedure to construct IRF using dynare? If not, why do we need to construct different IRFs than the one dynare provides?
now I see the explanation in your reference. I think it is because of pruning.
Dynare does GIRFs at the ergodic mean. What the literature on third-order perturbation has often done is use GIRFs at the stochastic steady state (sometimes called ergodic mean in the absence of shocks). Those are different concepts.
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