title: Expectation Maximization in Matlab on Missing Data
body: <p>I have to use <strong>EM</strong> to estimate the mean and covariance of the Gaussian distribution for each of the two classes. They have some missing attributes too.</p>
  
  <p>Classes of each object is known. Therefore the problem basically reduces to fitting a gaussian model with missing element.</p>
  
  <p>Which is the best library to use?</p>
  
  <p>How is <strong>ECM</strong> Algorithm different from <strong>EM</strong> algorithm?</p>