53 lines
2.9 KiB
Matlab
53 lines
2.9 KiB
Matlab
function check_prior_stderr_corr(estim_params_,bayestopt_)
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% function check_prior_stderr_corr(estim_params_,bayestopt_)
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% -------------------------------------------------------------------------
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% Check if the prior allows for negative standard deviations and
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% correlations larger than +-1. If so, issue a warning.
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% -------------------------------------------------------------------------
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% INPUTS
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% o estim_params_: [struct] information on estimated parameters
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% o bayestopt_: [struct] information on priors
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% -------------------------------------------------------------------------
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% OUTPUTS
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% none, but issues a warning if the prior allows for negative standard
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% -------------------------------------------------------------------------
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% This function is called by
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% o initial_estimation_checks.m
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% -------------------------------------------------------------------------
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% Copyright © 2023 Dynare Team
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%
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% This file is part of Dynare.
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%
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% Dynare is free software: you can redistribute it and/or modify
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% it under the terms of the GNU General Public License as published by
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% the Free Software Foundation, either version 3 of the License, or
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% (at your option) any later version.
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%
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% Dynare is distributed in the hope that it will be useful,
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% but WITHOUT ANY WARRANTY; without even the implied warranty of
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% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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% GNU General Public License for more details.
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%
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% You should have received a copy of the GNU General Public License
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% along with Dynare. If not, see <https://www.gnu.org/licenses/>.
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nvx = estim_params_.nvx; % number of stderr parameters for structural shocks
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if nvx && any(bayestopt_.p3(1:nvx)<0)
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warning('Your prior allows for negative standard deviations for structural shocks. Due to working with variances, Dynare will be able to continue, but it is recommended to change your prior.')
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end
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offset = nvx;
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nvn = estim_params_.nvn; % number of stderr parameters for measurement errors
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if nvn && any(bayestopt_.p3(1+offset:offset+nvn)<0)
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warning('Your prior allows for negative standard deviations for measurement error. Due to working with variances, Dynare will be able to continue, but it is recommended to change your prior.')
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end
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offset = nvx+nvn;
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ncx = estim_params_.ncx; % number of corr parameters for structural shocks
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if ncx && (any(bayestopt_.p3(1+offset:offset+ncx)<-1) || any(bayestopt_.p4(1+offset:offset+ncx)>1))
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warning('Your prior allows for correlations between structural shocks larger than +-1 and will not integrate to 1 due to truncation. Please change your prior')
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end
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offset = nvx+nvn+ncx;
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ncn = estim_params_.ncn; % number of corr parameters for measurement errors
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if ncn && (any(bayestopt_.p3(1+offset:offset+ncn)<-1) || any(bayestopt_.p4(1+offset:offset+ncn)>1))
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warning('Your prior allows for correlations between measurement errors larger than +-1 and will not integrate to 1 due to truncation. Please change your prior')
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end |