[Topic-models] Intuition behind CTM and DTM

Lei Tang L.Tang at asu.edu
Mon Nov 24 16:16:50 EST 2008


Thanks. Your explanation is of great help!

On Mon, Nov 24, 2008 at 1:13 PM, David Mimno <mimno at cs.umass.edu> wrote:

> Thanks Erik!
>
> Note to reviewers: I don't use those functions for research purposes. :)
>
> On Mon, Nov 24, 2008 at 11:56:03AM -0800, Erik Sudderth wrote:
> > Thanks for the very clear explanation of the logistic normal
> > distribution, David.  I noticed a small bug in your R code: you need to
> > multiply by a square root of the covariance matrix, not the matrix
> > itself, to sample from a Gaussian.  The following code does this:
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-- 
Lei Tang
Dept.of Computer Science and Engineering,
Arizona State University
http://www.public.asu.edu/~ltang9/
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