Name of Quantlet: Topic Modeling
Published in: Dynamic Topic Modeling for Cryptocurrency Community Forums.
Description: Plots of Dirichlet distribution.
Keywords: Dirichlet, distribution, density plots.
Author: Ernie Teo
function r = drchrnd(a,n)
p = length(a);
r = gamrnd(repmat(a,n,1),1,n,p);
r = r ./ repmat(sum(r,2),1,p);
a = [1 1 1];
n = 1000;
r = drchrnd(a,n);
HD=scatter3(r(:,1),r(:,2),r(:,3),'MarkerFaceColor',[1 0 0]);
direction = [1 0 0];
rotate(HD,direction,50)
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