title: What does "truncated gradients" mean in LSTM?
body: <p>I'm learning a tensorflow tutorial about LSTM: <a href="https://www.tensorflow.org/versions/master/tutorials/recurrent/index.html#truncated-backpropagation" rel="nofollow">Truncated Backpropagation</a>. </p>
  
  <p>This section says the code uses "truncated backpropagation", so what exactly does this mean?</p>