Talk:Matrix normal distribution

From Wikipedia, the free encyclopedia
Jump to: navigation, search
WikiProject Statistics (Rated Start-class, Low-importance)
WikiProject icon

This article is within the scope of the WikiProject Statistics, a collaborative effort to improve the coverage of statistics on Wikipedia. If you would like to participate, please visit the project page or join the discussion.

Start-Class article Start  This article has been rated as Start-Class on the quality scale.
 Low  This article has been rated as Low-importance on the importance scale.

Pdf formula[edit]

According to Arnold (1981), the pdf on this page has the powers of the scale matrices backwards. It should be |\Omega|^{-p/2} and |\Sigma|^{-n/2}. Somebody please double check this, I don't want to make the edit without confirmation from somebody else... -[ at 18:27, 11 July 2008 ]

Typesetting with overflow-infobox for formula[edit]

23-Feb-2009: I have added an overflow-infobox, below the top infobox, to display the long formula without pushing the top infobox into an over-wide display. Also, I have split the long equation to wrap onto 2 lines, rather than force a wide line to the bottom of the article. Note that equations can be wrapped, easily, by coding 2 math-tag sections, split around the "=" sign:

  • <math>X+Y =</math><math> A+9</math>

The above coding would allow "X+Y=" to wrap with "A+9" on the next line. -Wikid77 (talk) 11:56, 23 February 2009 (UTC)

Please don't wrap equations this way! This damages the spacing. Compare:
\displaystyle X + Y = A + 9
\displaystyle X + Y =\displaystyle A + 9
These were generated with
<math>\displaystyle X + Y = A + 9</math>
<math>\displaystyle X + Y =</math><math>\displaystyle A + 9</math>
(The \displaystyle is only to force the TeX parser to produce a PNG.) Look at the spacing between the equals sign. It's correct in the first equation and wrong in the second. Ozob (talk) 18:24, 23 February 2009 (UTC)


A good reference for results about the matrix-normal distribution is A.P. Dawid "Some Matrix-Variate Distribution Theory" Biometrika 1981. Most of the standard facts featured on the wiki pages of other distributions may be found in that paper. (talk) 01:26, 7 September 2009 (UTC)anon

I have added a more complete version of this ref to the article. Melcombe (talk) 09:47, 8 September 2009 (UTC)