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git-svn-id: https://www.dynare.org/svn/dynare/dynare_v4@1576 ac1d8469-bf42-47a9-8791-bf33cf982152
time-shift
assia 2008-01-11 15:40:40 +00:00
parent 1fe3a13200
commit ac0ab299c1
1 changed files with 18 additions and 1 deletions
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19
matlab/lpdfbeta.m
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@ -1,5 +1,22 @@
function ldens = lpdfbeta(x,a,b);
% log BETA PDF
% function ldens = lpdfbeta(x,a,b)
% log Beta PDF
%
% INPUTS
% x: density evatuated at x
% a: Beta distribution paramerer
% b: Beta distribution paramerer
%
% OUTPUTS
% ldens: the log Beta PDF
%
% SPECIAL REQUIREMENTS
% none
%
% part of DYNARE, copyright Dynare Team (2003-2008)
% Gnu Public License.
ldens = gammaln(a+b) - gammaln(a) - gammaln(b) + (a-1)*log(x) + (b-1)*log(1-x);
% 10/11/03 MJ adapted from a GAUSS version by F. Schorfheide, translated