"[...] C implementation of variational EM for latent Dirichlet allocation [...]"

E.g.: http:&#x2F;&#x2F;www.princeton.edu&#x2F;~achaney&#x2F;tmve&#x2F;wiki100k&#x2F;docs&#x2F;Chomsky_hierarchy.html<p>About: http:&#x2F;&#x2F;www.cs.princeton.edu&#x2F;~blei&#x2F;lda-c&#x2F;<p>(No links in submission text: https:&#x2F;&#x2F;news.ycombinator.com&#x2F;formatdoc ...)