Speech and Natural Language Processing, Daniel Jurafsky and James H. Martin, Prentice Hall, 2nd edition (29. April 2008) or Prentice Hall International, Pearson New International Edition (17. Juli 2013). Draft of the third edition.
Deep Learning, Ian Goodfellow and Yoshua Bengio and Aaron Courville, MIT Press, 2016 (section 12.4)
Other books in Best NLP books