EM算法，高斯混合模型的算法，很实用.里面附有很全的代码，包括实例-Author : Shujaat Khan Data Entry Step 1 : Initial guess Step 2 : Expectation Step computes the responsibilities Step 3 : Maximization Step compute the weighted means and variances

Expectation Maximization algorithm for Gaussian Mixture Model Training

In this paper, we present an approach toward pedestrian detection and tracking from infrared imagery using joint shape and appearance cues. A layered representation is first introduced and a generalized expectation-maximization (EM) algorithm is dev