title: calculation of mean and variance in batch normalization in convolutional neural network
body: <p>May I ask if the following understanding of batch normalization in convolutional neural network is correct?</p>
  <p>As shown in the diagram below, the mean and variance are calculated using all the cells on the same feature maps generated from respective examples in the current mini-batch, i.e. they are calculated across h, w and m axis.</p>
  <p><a href="https://i.stack.imgur.com/VEQhM.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/VEQhM.png" alt="enter image description here" /></a></p>