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Mark

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UT Southwestern

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23 May 2012 qtukey Finds the Tukey's q studentized range critical value. Author: Antonio Trujillo-Ortiz

The statistics toolbox does have a private function that implements AS 190 and 190.2 under toolbox/stats/private/stdrinv.m from R2011a. It is called from the multcompare tool when doing the default Tukey HSD comparison.

The note accompanying the code is
% Based on Fortran program from statlib, http://lib.stat.cmu.edu
% Algorithm AS 190 Appl. Statist. (1983) Vol.32, No. 2
% Incorporates corrections from Appl. Statist. (1985) Vol.34 (1)

13 Jan 2012 EM algorithm for Gaussian mixture model EM algorithm for Gaussian mixture. Works on arbitray dimensions with high speed and precision. Author: Mo Chen

For people getting different results on each run, this is due to the use of psuedorandom number generators in initialization. Try setting the psuedorandom number seed:
http://www.mathworks.com/help/techdoc/ref/rng.html

18 Oct 2011 Count Counts the number elements in a specified vector that match a specified criteria. Author: Richard Medlock

For me histc(x,unique(x)) did what I wanted. This gives me the frequency of each value that occurs in the vector x.

17 Mar 2011 TPROD -- arbitary tensor products between n-d arrays TPROD -- efficiently allows any type of tensor product between 2 multi-dimensional arrays Author: Jason Farquhar

Those interested in tensor operations may also be interested in the Tensor Toolbox from Sandia National Labs:

http://csmr.ca.sandia.gov/~tgkolda/TensorToolbox/

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