title: could not calculate the dimensions after pooling and subsampling in the famous Convolutional neural nets example
body: <p><img src="https://i.stack.imgur.com/HyAs5.png" alt="Hierarchical Models Of Perception and Reasoning by Yann LeCun"></p>
  
  <p>The above image is from a pdf by Yann LeCun, titled "Hierarchical Models Of Perception and Reasoning"</p>
  
  <p><strong>I am not able to understand the how the layer 2 is 14X14 feature maps?
  How can 75X75 matrix with 10X10 pooling and 5X5 subsampling gives 14X14 matrix ?</strong></p>