Merge pull request #1424 from JohannesPfeifer/manual
Manual changes related shock_decompositiontime-shift
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ad2e1ffc8d
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doc/dynare.texi
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doc/dynare.texi
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@ -2,6 +2,8 @@
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@c %**start of header
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@setfilename dynare.info
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@documentencoding UTF-8
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@codequoteundirected on
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@settitle Dynare Reference Manual
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@afourwide
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@dircategory Math
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@ -206,6 +208,9 @@ The Model file
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* Deterministic simulation::
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* Stochastic solution and simulation::
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* Estimation::
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* Model Comparison::
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* Shock Decomposition::
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* Calibrated Smoother::
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* Forecasting::
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* Optimal policy::
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* Sensitivity and identification analysis::
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@ -1065,6 +1070,9 @@ end of line one and the parser would continue processing.
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* Deterministic simulation::
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* Stochastic solution and simulation::
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* Estimation::
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* Model Comparison::
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* Shock Decomposition::
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* Calibrated Smoother::
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* Forecasting::
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* Optimal policy::
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* Sensitivity and identification analysis::
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@ -1104,6 +1112,9 @@ mutually exclusive arguments are separated by vertical bars: @samp{|};
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@item
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@var{INTEGER} indicates an integer number;
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@item
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@var{INTEGER_VECTOR} indicates a vector of integer numbers [@var{INTEGER_1} ... @var{INTEGER_N}]
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@item
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@var{DOUBLE} indicates a double precision number. The following syntaxes
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are valid: @code{1.1e3}, @code{1.1E3}, @code{1.1d3}, @code{1.1D3}. In
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@ -6970,6 +6981,24 @@ estimates using a higher tapering are usually more reliable.
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@end table
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@end defvr
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@deffn Command unit_root_vars @var{VARIABLE_NAME}@dots{};
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This command is deprecated. Use @code{estimation} option @code{diffuse_filter} instead for estimating a model with non-stationary observed variables or @code{steady} option @code{nocheck} to prevent @code{steady} to check the steady state returned by your steady state file.
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@end deffn
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Dynare also has the ability to estimate Bayesian VARs:
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@deffn Command bvar_density ;
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Computes the marginal density of an estimated BVAR model, using
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Minnesota priors.
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See @file{bvar-a-la-sims.pdf}, which comes with Dynare distribution,
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for more information on this command.
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@end deffn
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@node Model Comparison
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@section Model Comparison
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@deffn Command model_comparison @var{FILENAME}[(@var{DOUBLE})]@dots{};
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@deffnx Command model_comparison (marginal_density = laplace | modifiedharmonicmean) @var{FILENAME}[(@var{DOUBLE})]@dots{};
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@anchor{model_comparison}
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@ -7045,6 +7074,8 @@ Posterior probability of the respective model
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@end defvr
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@node Shock Decomposition
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@section Shock Decomposition
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@deffn Command shock_decomposition [@var{VARIABLE_NAME}]@dots{};
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@deffnx Command shock_decomposition (@var{OPTIONS}@dots{}) [@var{VARIABLE_NAME}]@dots{};
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@ -7083,8 +7114,8 @@ calibrated model.
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@xref{nobs}.
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@item use_shock_groups [= @var{STRING}]
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@anchor{use_shock_groups} Uses groups of shocks instead of individual shocks in
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the decomposition. Groups of shocks are defined in the @ref{shock_groups} block.
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@anchor{use_shock_groups} Uses shock grouping defined by the string instead of individual shocks in
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the decomposition. The groups of shocks are defined in the @ref{shock_groups} block.
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@item colormap = @var{STRING}
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@anchor{colormap} Controls the colormap used for the shocks decomposition
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@ -7092,12 +7123,11 @@ graphs. See @code{colormap} in Matlab/Octave manual for valid arguments.
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@item nograph
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@xref{nograph}. Suppresses the display and creation only within the
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@code{shock_decomposition}-command but does not affect other commands.
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@code{shock_decomposition}-command, but does not affect other commands.
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@xref{plot_shock_decomposition} for plotting graphs.
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@item init_state = @var{INTEGER}
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@anchor{init_state} It can take values of @math{0} or @math{1}. If equal to
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@math{0}, the shock decomposition is computed conditional on the smoothed state
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@item init_state = @var{BOOLEAN}
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@anchor{init_state} If equal to @math{0}, the shock decomposition is computed conditional on the smoothed state
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variables in period @math{0}, @i{i.e.} the smoothed shocks starting in period
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@math{1} are used. If equal to @math{1}, the shock decomposition is computed
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conditional on the smoothed state variables in period @math{1}. Default:
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@ -7106,10 +7136,12 @@ conditional on the smoothed state variables in period @math{1}. Default:
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@outputhead
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@defvr {MATLAB/Octave variable} oo_.shock_decomposition
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@vindex oo_.shock_decomposition
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@anchor{oo_.shock_decomposition}
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The results are stored in the field @code{oo_.shock_decomposition}, which is a three
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dimensional array. The first dimension contains the @code{M_.endo_nbr} endogenous variables.
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The second dimension stores
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The second dimension stores
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in the first @code{M_.exo_nbr} columns the contribution of the respective shocks.
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Column @code{M_.exo_nbr+1} stores the contribution of the initial conditions,
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while column @code{M_.exo_nbr+2} stores the smoothed value of the respective
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@ -7117,6 +7149,7 @@ endogenous variable in deviations from their steady state, @i{i.e.} the mean and
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subtracted. The third dimension stores the time periods. Both the variables
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and shocks are stored in the order of declaration, @i{i.e.} @code{M_.endo_names} and
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@code{M_.exo_names}, respectively.
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@end defvr
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@end deffn
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@ -7127,11 +7160,11 @@ and shocks are stored in the order of declaration, @i{i.e.} @code{M_.endo_names}
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of the shock groups is written in a block delimited by @code{shock_groups} and
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@code{end}.
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Each line defines a group of shock as a list of exogenous variables:
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Each line defines a group of shocks as a list of exogenous variables:
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@example
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SHOCK_GROUP_NAME = VARIABLE_1 [[,] VARIABLE_2 [,]@dots{}];
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`SHOCK GROUP NAME' = VARIABLE_1 [[,] VARIABLE_2 [,]@dots{}];
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'SHOCK GROUP NAME' = VARIABLE_1 [[,] VARIABLE_2 [,]@dots{}];
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@end example
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@optionshead
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@ -7155,12 +7188,13 @@ varexo e_a, e_b, e_c, e_d;
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shock_groups(name=group1);
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supply = e_a, e_b;
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`aggregate demand' = e_c, e_d;
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'aggregate demand' = e_c, e_d;
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end;
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shocks_decomposition(use_shock_groups=group1);
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@end example
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This example defines a shock grouping with the name @code{group1}, containing a set of supply and demand shocks
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and conducts the shock decomposition for these two groups.
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@end deffn
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@deffn Command realtime_shock_decomposition [@var{VARIABLE_NAME}]@dots{};
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@ -7171,16 +7205,22 @@ shocks_decomposition(use_shock_groups=group1);
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This command computes the realtime historical shock decomposition for a given
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sample based on the Kalman smoother. For each period
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@math{T=[@code{presample}@dots{}@code{nobs}]}, it computes the:
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@math{T=[@code{presample},@dots{},@code{nobs}]}, it recursively computes three objects:
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@itemize @bullet
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@item
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realtime historical shock decomposition @math{Y(t|T)} for @math{t=[1@dots{}T]},
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@i{i.e.} without observing data in @math{[T+1@dots{}@code{nobs}]};
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realtime historical shock decomposition @math{Y(t|T)} for @math{t=[1,@dots{},T]},
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@i{i.e.} without observing data in @math{[T+1,@dots{},@code{nobs}]}. This results in a standard
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shock decomposition being computed for each additional datapoint becoming available after @code{presample}.
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@item
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conditional shock decomposition @math{Y(T|T)} conditional on @math{Y(T|T-1)},
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@i{i.e.} @math{Y(t|T)} for @math{t=[T-1@dots{}T]};
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forecast shock decomposition @math{Y(T+k|T)} for @math{k=[1,@dots{},forecast]}, @i{i.e.} the @math{k}-step
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ahead forecast made for every @math{T} is decomposed in its shock contributions.
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@item
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forecast shock decomposition @math{Y(T|T-1)}.
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realtime conditional shock decomposition of the difference between the realtime historical shock decomposition and the
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forecast shock decomposition. If @ref{vintage} is equal to @math{0}, it computes the effect of shocks realizing in period
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@math{T}, @i{i.e.} decomposes @math{Y(T|T)-Y(T|T-1)}. Put differently it conducts a @math{1}-period ahead shock decomposition from
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@math{T-1} to @math{T}, by decomposing the update step of the Kalman filter. If @code{vintage>0} and smaller than @code{nobs},
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the decomposition is conducted of the forecast revision @math{Y(T+k|T+k)-Y(T+k|T)}.
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@end itemize
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Like @ref{shock_decomposition} it decomposes the historical deviations of the endogenous
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@ -7228,40 +7268,79 @@ realtime shock decompositions are computed, @i{i.e.} for
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@anchor{forecast_shock_decomposition} Compute shock decompositions up to
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@math{T+k} periods, @i{i.e.} get shock contributions to k-step ahead forecasts.
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@item save_realtime = [@var{integer1} ... @var{integern}]
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@item save_realtime = [@var{INTEGER_VECTOR}]
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@anchor{save_realtime} Choose for which vintages to save the full realtime
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shock decomposition. Default: @math{0}.
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@end table
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@outputhead
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@defvr {MATLAB/Octave variable} oo_.realtime_shock_decomposition
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@vindex oo_.realtime_shock_decomposition
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The results of realtime historical decompositions are stored in the field
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@code{oo_.realtime_shock_decomposition}, which is a structure. Field
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@code{pool} stores the pooled decomposition (@xref{plot_shock_decomposition}).
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Fields @code{time_*} store the vintages of realtime historical shock
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decompositions.
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Structure storing the results of realtime historical decompositions. Fields are three-dimensional arrays with
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the first two dimension equal to the ones of @ref{oo_.shock_decomposition}. The third dimension stores the time
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periods and is therefore of size @code{T+forecast}. Fields are of the form:
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@example
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@code{oo_.realtime_shock_decomposition.@var{OBJECT}}
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@end example
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where @var{OBJECT} is one of the following:
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@vindex oo_.conditional_shock_decomposition
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The results of realtime conditional decompositions are stored in the field
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@code{oo_.conditional_shock_decomposition}, which is a structure. Field
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@code{pool} stores the pooled decomposition @math{Y(t|T)} for
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@math{t=T-1@dots{}T} @xref{plot_shock_decomposition}. Conditional shock
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decomposition sets the initial condition in @math{T-1}, so only computes the
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effect of shocks in period @math{T}, @i{i.e.} it is just a @math{1}-period
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shock decomposition from @math{T-1} to @math{T}. In practice it decomposes the
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update step of the Kalman filter. Fields @code{time_*} store the vintages of
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@math{k}-step conditional forecast shock decompositions @math{Y(t|T+k)}, for
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@math{t=[T@dots{}T+k}. @xref{vintage}.
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@table @code
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@item pool
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Stores the pooled decomposition, @i{i.e.} for every realtime shock decomposition terminal period
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@math{T=[@code{presample},@dots{},@code{nobs}]} it collects the last period's decomposition @math{Y(T|T)}
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(see also @ref{plot_shock_decomposition}). The third dimension of the array will have size
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@code{nobs+forecast}.
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@item time_*
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Stores the vintages of realtime historical shock decompositions if @code{save_realtime} is used. For example, if
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@code{save_realtime=[5]} and @code{forecast=8}, the third dimension will be of size 13.
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@end table
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@end defvr
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@defvr {MATLAB/Octave variable} oo_.realtime_conditional_shock_decomposition
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@vindex oo_.realtime_conditional_shock_decomposition
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Structure storing the results of realtime conditional decompositions. Fields are of the form:
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@example
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@code{oo_.realtime_conditional_shock_decomposition.@var{OBJECT}}
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@end example
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where @var{OBJECT} is one of the following:
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@table @code
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@item pool
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Stores the pooled realtime conditional shock decomposition, @i{i.e.} collects the decompositions of
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@math{Y(T|T)-Y(T|T-1)} for the terminal periods @math{T=[@code{presample},@dots{},@code{nobs}]}.
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The third dimension is of size @code{nobs}.
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@item time_*
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Store the vintages of @math{k}-step conditional forecast shock decompositions @math{Y(t|T+k)}, for
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@math{t=[T@dots{}T+k]}. @xref{vintage}. The third dimension is of size @code{1+forecast}.
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@end table
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@end defvr
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@defvr {MATLAB/Octave variable} oo_.realtime_forecast_shock_decomposition
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@vindex oo_.realtime_forecast_shock_decomposition
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The results of realtime forecast decompositions are stored in the field
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@code{oo_.realtime_forecast_shock_decomposition}, which is a structure. Field
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@code{pool} stores the pooled decomposition @xref{plot_shock_decomposition}.
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Forecast shock decomposition computes the @math{1}-step ahead effect of shocks
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on the @math{1}-step ahead prediction, @i{i.e.} @math{Y(T|T-1)}. Fields
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@code{time_*} store the vintages of @math{k}-step out-of-sample forecast shock
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Structure storing the results of realtime forecast decompositions. Fields are of the form:
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@example
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@code{oo_.realtime_forecast_shock_decomposition.@var{OBJECT}}
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@end example
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where @var{OBJECT} is one of the following:
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@table @code
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@item pool
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Stores the pooled realtime forecast decomposition of the @math{1}-step ahead effect of shocks
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on the @math{1}-step ahead prediction, @i{i.e.} @math{Y(T|T-1)}.
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@item time_*
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Stores the vintages of @math{k}-step out-of-sample forecast shock
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decompositions, @i{i.e.} @math{Y(t|T)}, for @math{t=[T@dots{}T+k]}. @xref{vintage}.
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@end table
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@end defvr
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@end deffn
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@ -7272,12 +7351,11 @@ decompositions, @i{i.e.} @math{Y(t|T)}, for @math{t=[T@dots{}T+k]}. @xref{vintag
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@descriptionhead
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This command plots the historical shock decomposition already computed by
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@code{shock_decomposition}. The @code{variable_names} provided govern which
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@code{shock_decomposition} or @code{realtime_shock_decomposition}. For that reason,
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it must come after one of these commands. The @code{variable_names} provided govern which
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variables the decomposition is plotted for.
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Note that this command must come after @code{shock_decomposition} or @code{realtime_shock_decomposition}.
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Further note that, unlike the majority of dynare commands, the options
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Further note that, unlike the majority of Dynare commands, the options
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specified below are overwritten with their defaults before every call to
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@code{plot_shock_decomposition}. Hence, if you want to reuse an option in a
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subsequent call to @code{plot_shock_decomposition}, you must pass it to the
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@ -7300,14 +7378,14 @@ command again.
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@itemx graph_format = ( @var{FORMAT}, @var{FORMAT}@dots{} )
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@xref{graph_format}.
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@item detail_plot = @var{INT_NUMBER}
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@item detail_plot
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Plots shock contributions using subplots, one per shock (or group of
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shocks). Pass @math{1} to turn it on and @math{0} to turn it off. Default:
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@math{0}
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not activated
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@item interactive = @var{INT_NUMBER}
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Under MATLAB, add uimenu's for detailed group plots. Pass @math{1} to turn it
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on and @math{0} to turn it off. Default: @math{0}
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@item interactive
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Under MATLAB, add uimenus for detailed group plots. Pass @math{1} to turn it
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on and @math{0} to turn it off. Default: not activated
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@item screen_shocks
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@anchor{screen_shcoks} For large models (@i{i.e.} for models with more than @math{16}
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@ -7315,10 +7393,10 @@ shocks), plots only the shocks that have the largest historical contribution
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for chosen selected @code{variable_names}. Historical contribution is ranked
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by the mean absolute value of all historical contributions.
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@item steadystate = @var{INTEGER}
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@item steadystate
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@anchor{steadystate} If equal to @math{1}, the the @math{y}-axis value of the
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zero line in the shock decomposition plot is translated to the steady state
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level. Default: @math{0}
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level. Default: not activated
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@item type = @code{qoq} | @code{yoy} | @code{aoa}
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@anchor{type} For quarterly data, valid arguments are: @code{qoq} for
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@ -7333,82 +7411,54 @@ default figure name set by @code{plot_shock_decomposition}. This can avoid to
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overwrite plots in case of sequential calls to @code{plot_shock_decomposition}.
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@item write_xls
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@anchor{write_xls} Saves shock decompositions to excel.
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@anchor{write_xls} Saves shock decompositions to Excel-file in the main directory, named
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@code{FILENAME_shock_decomposition_TYPE_FIG_NAME.xls}. This option requires your system to be
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configured to be able to write Excel files.@footnote{In case of Excel not being installed,
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@url{https://mathworks.com/matlabcentral/fileexchange/38591-xlwrite--generate-xls-x--files-without-excel-on-mac-linux-win} may be helpful.}
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@item realtime = @var{INTEGER}
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@anchor{realtime} Which kind of shock decomposition to plot. @var{INTEGER} can take following values:
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@itemize @bullet
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@item
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@code{0}: historical shock decomposition: @math{Y(t|T)} for
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@math{t=[1@dots{}T]}, @math{T=} @code{nobs} full sample
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@code{0}: standard historical shock decomposition. @xref{shock_decomposition}.
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@item
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@code{1}: realtime historical shock decomposition: for
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@math{T=[1@dots{}@code{nobs}]}, realtime shock decomposition @math{Y(t|T)} for
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@math{t=[1@dots{}T]}
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@code{1}: realtime historical shock decomposition. @xref{realtime_shock_decomposition}.
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@item
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@code{2}: conditional shock decomposition: for @code{T=1:nobs}, realtime shock
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decomposition of @math{Y(T|T)} conditional on @math{Y(T|T-1)}, @i{i.e.}
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@math{Y(t|T)} for @math{t=[T-1@dots{}T]}
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@code{2}: conditional realtime shock decomposition. @xref{realtime_shock_decomposition}.
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@item
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@code{3}: forecast shock decomposition: for @math{T=[1@dots{}@code{nobs}]},
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realtime shock decomposition of @math{Y(T|T-1)}
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@code{3}: realtime forecast shock decomposition. @xref{realtime_shock_decomposition}.
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@end itemize
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If no @ref{vintage} is requested, @i{i.e.} @code{vintage=0} then the pooled objects from @ref{realtime_shock_decomposition}
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will be plotted and the respective vintage otherwise.
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Default: @math{0}
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@item vintage = @var{INTEGER}
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@anchor{vintage} Applies if @code{realtime}@math{>0}. Can take following values:
|
||||
@itemize @bullet
|
||||
@item
|
||||
@code{0}: plots @math{1}-step pooled shock decompositions
|
||||
@item
|
||||
@code{1}: pooled realtime shock decomposition. For @math{T=[1@dots{}@code{nobs}]}, plots last
|
||||
time point @math{Y(T|T)} of each vintage shock decomposition @math{Y(1:T|T)}
|
||||
@item
|
||||
@code{2}: pooled conditional shock decomposition. For
|
||||
@math{T=[1@dots{}@code{nobs}]}, realtime @math{1}-step shock decomposition of
|
||||
@math{Y(T|T)} conditional on @math{Y(T|T-1)} (@i{i.e.} decomposition of
|
||||
@math{1}-step filter updates of each vintage @math{T})
|
||||
@item
|
||||
@code{3}: pooled forecast shock decomposition. For
|
||||
@math{T=[1@dots{}@code{nobs}]}, realtime @math{1}-step ahead shock
|
||||
decomposition of @math{Y(T|T-1)} (@i{i.e.} decomposition of shock
|
||||
contributions to @math{1}-step ahead forecasts of each vintage @math{T})
|
||||
@end itemize
|
||||
When the value passed is greater than @math{0}, it plots the shock
|
||||
@anchor{vintage} Selects a particular data vintage in @math{[presample,@dots{},nobs]} for which to plot the results from
|
||||
@ref{realtime_shock_decomposition} selected via the @ref{realtime} option. If the standard
|
||||
historical shock decomposition is selected (@code{realtime=0}), @code{vintage} will have no effect. If @code{vintage=0}
|
||||
the pooled objects from @ref{realtime_shock_decomposition} will be plotted. If @code{vintage>0}, it plots the shock
|
||||
decompositions for vintage @math{T=@code{vintage}} under the following scenarios:
|
||||
@itemize @bullet
|
||||
@item
|
||||
@code{realtime=1}: the full vintage shock decomposition @math{Y(t|T)} for
|
||||
@math{t=[1@dots{}T]}
|
||||
@math{t=[1,@dots{},T]}
|
||||
@item
|
||||
@code{realtime=2}: the conditional forecast shock decomposition from @math{T},
|
||||
@i{i.e.} plots @math{Y(T+j|T+j)} and the shock contributions needed to get to
|
||||
the data @math{Y(T+j)} conditional on @math{T=}@code{vintage}, with
|
||||
@math{j=[0@dots{}@code{forecast}]}.
|
||||
@math{j=[0,@dots{},@code{forecast}]}.
|
||||
@item
|
||||
@code{realtime=3}: plots unconditional forecast shock decomposition from
|
||||
@math{T}, @i{i.e.} @math{Y(T+j|T)}, where @math{T=@code{vintage}} and
|
||||
@math{j=[0@dots{}@code{forecast}]}.
|
||||
@math{j=[0,@dots{},@code{forecast}]}.
|
||||
@end itemize
|
||||
Default: @math{0}
|
||||
@end table
|
||||
|
||||
@end deffn
|
||||
|
||||
@deffn Command unit_root_vars @var{VARIABLE_NAME}@dots{};
|
||||
|
||||
This command is deprecated. Use @code{estimation} option @code{diffuse_filter} instead for estimating a model with non-stationary observed variables or @code{steady} option @code{nocheck} to prevent @code{steady} to check the steady state returned by your steady state file.
|
||||
@end deffn
|
||||
|
||||
Dynare also has the ability to estimate Bayesian VARs:
|
||||
|
||||
@deffn Command bvar_density ;
|
||||
Computes the marginal density of an estimated BVAR model, using
|
||||
Minnesota priors.
|
||||
|
||||
See @file{bvar-a-la-sims.pdf}, which comes with Dynare distribution,
|
||||
for more information on this command.
|
||||
@end deffn
|
||||
@node Calibrated Smoother
|
||||
@section Calibrated Smoother
|
||||
|
||||
Dynare can also run the smoother on a calibrated model:
|
||||
|
||||
|
|
Loading…
Reference in New Issue