title: Pytorch: nn.Dropout vs. F.dropout
body: <p>There are two ways to perform dropout:</p>
  <ul>
  <li><code>torch.nn.Dropout</code></li>
  <li><code>torch.nn.functional.Dropout</code></li>
  </ul>
  <p>I ask:</p>
  <ul>
  <li>Is there a difference between them?</li>
  <li>When should I use one over the other?</li>
  </ul>
  <p>I don't see any performance difference when I switched them around.</p>