From 4bc9a2b246e1a84e87e176db8aa63296f028f2b2 Mon Sep 17 00:00:00 2001
From: neingeist <neingeist@bl0rg.net>
Date: Wed, 26 Nov 2014 02:15:27 +0100
Subject: [PATCH] Estimate Gaussian

---
 ex8/estimateGaussian.m | 17 +++++------------
 1 file changed, 5 insertions(+), 12 deletions(-)

diff --git a/ex8/estimateGaussian.m b/ex8/estimateGaussian.m
index 35ed72f..38d20a8 100644
--- a/ex8/estimateGaussian.m
+++ b/ex8/estimateGaussian.m
@@ -1,11 +1,11 @@
 function [mu sigma2] = estimateGaussian(X)
-%ESTIMATEGAUSSIAN This function estimates the parameters of a 
+%ESTIMATEGAUSSIAN This function estimates the parameters of a
 %Gaussian distribution using the data in X
-%   [mu sigma2] = estimateGaussian(X), 
+%   [mu sigma2] = estimateGaussian(X),
 %   The input X is the dataset with each n-dimensional data point in one row
 %   The output is an n-dimensional vector mu, the mean of the data set
 %   and the variances sigma^2, an n x 1 vector
-% 
+%
 
 % Useful variables
 [m, n] = size(X);
@@ -21,16 +21,9 @@ sigma2 = zeros(n, 1);
 %               should contain variance of the i-th feature.
 %
 
-
-
-
-
-
-
-
-
+mu = 1/m * sum(X)';
+sigma2 = 1/m * sum(bsxfun(@minus, X, mu').^2)';
 
 % =============================================================
 
-
 end