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Re:A Gentle Introduction to Backpropagation by jkbyc on Tuesday August 05, 2014 @08:13AM (#8136478)
The best text I've read about backpropagation is in "Neural Networks: A Systematic Introduction" by Raul Rojas [1]

He uses a nice graphical approach that is easily understandable yet formal. It's been many years since I've read it to learn for an exam at university but I remember it was an enjoyable read and I wished I had more time to spend on the book.

[1] http://www.amazon.com/Neural-Networks-A-Systematic-Introduct...

Re:A Gentle Introduction to Backpropagation by jbarrow on Tuesday August 05, 2014 @08:34AM (#8136544)
Not having read Rojas' book, I think the best text I've ever read on the subject is Michael Nielsens (in progress) "Neural Networks and Deep Learning." [1] Chapter 2 covers back propagation.

It has a similarly approachable yet formal style, and I have recommended it to people with no ML experience in the past who have found it very intuitive.

[1] http://neuralnetworksanddeeplearning.com

Re:A Gentle Introduction to Backpropagation by Thriptic on Tuesday August 05, 2014 @09:18AM (#8136717)
I agree; I am just getting into machine learning currently, and chapter 2 of this book is what made back propagation "click" for me.