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Venkat R

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Comments and Ratings by Venkat View all
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12 Oct 2012 Variational Bayesian Inference for Gaussian Mixture Model Variational Bayes method (mean field) for GMM can auto determine the number of components Author: Mo Chen

Hi
I was able to run the test case successfully. But when I give my data as input, I get the error
Error using ==> chol
Matrix must be positive definite.

Error in ==> vbgm>vbound at 176
V = chol(Xs*Xs'/nk(i));

Error in ==> vbgm at 28
L(t) = vbound(X,model,prior)/n;

My data (286x162) doesn't contain any complete row or column as 0, although it does contain 0 at few discreet places. Does this method have a limitation?

regards,
Venkat
18 Sep 2012 clusterData Clusters an MxN array of data into an unspecified number (P) of bins. Author: Brett Shoelson

Very cool submission. I was searching different options to kind 'k' automatically in the k-means. This submission does it nicely.
04 Apr 2012 Finger region localisation Localisation of the finger region using a simple mask filter method. Author: Bram Ton

Hi Brom,
Seeing the result thumbnail,I am interested to use it. Can you add a demo image and file to obtain the edges.

regards,
Ramana
20 Mar 2012 nonduplicate Makes all values of input array distinct - used to get interp1 to work when x data has duplicates. Author: Nathan Tomlin

very nice.IT works for me
01 Mar 2012 A suite of minimal bounding objects Suite of tools to compute minimal bounding circles, rectangles, triangles, spheres, incircles, etc. Author: John D'Errico

Dear John,

A file 'minboundellipse.m' is missing I suppose.

regards,
Venkat

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