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Belief Propagation doubt

Started by mahadevi July 12, 2010
Hi all,

My project involves estimating some random vector 'X=[x1,x2....xn]' using the belief propagation algorithm in Matlab. I have a doubt in the initialization part of the algorithm.

It states, the initial estimate of each x, x1_hat, x2_hat...xn_hat = mean of Px(x) and var(x_hat) = var of Px(x) where Px(x) is the prior marginal distribution. Now how do I do this in Matlab? If I assume some prior marginal as U(0,1), then what is my initial x1_hat, x2_hat...xn_hat ?. I understand it theoretically but its difficult to transform it to coding domain.

Your reply would be of great help to proceed in my project. Thanks a lot in advance !

Regards,
Mahadevi.