
Archives
 April 2017
 December 2016
 September 2015
 December 2014
 February 2014
 January 2014
 September 2013
 September 2012
 January 2012
 November 2011
 October 2011
 July 2011
 May 2011
 March 2011
 November 2009
 October 2009
 August 2009
 June 2009
 May 2009
 March 2009
 February 2009
 January 2009
 December 2008
 November 2008
 October 2008
 August 2008
 July 2008
 June 2008

Meta
Monthly Archives: July 2008
Marginal Beliefs of Random MRFs
A pairwise Markov Random Field is a way of defining a probability distribution over some vector . One way to write one is . Where the first sum is over all the variables, and the second sum is over neighboring … Continue reading
More Vector Calculus Identities
I realize that “rule 2” from the previous post is actually just a special case of the vector chain rule. Rule 4. (Chain rule) If , then , or equivalently, . Here, I have used to denote the argument of … Continue reading
Vector Calculus Identities
Suppose . That is, is a scalar function of a vector , given by taking the inner product of the two vector valued functions and . Now, we would like the gradient of , i.e. . What is it? I … Continue reading