title: Does batch_first affect hidden tensors in Pytorch LSTMs?
body: <p>Does <code>batch_first</code> affect hidden tensors in Pytorch LSTMs?</p>
  
  <p>That is if <code>batch_first</code> parameter is true, 
  Will the hidden state be <code>(numlayer*direction,num_batch,encoding_dim)</code>
  or <code>(num_batch,numlayer*direction,encoding_dim)</code></p>
  
  <p>I've tested both, both give no error.</p>