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Neural Networks: The Backpropagation algorithm in a picture

Here I present the backpropagation algorithm for a continuous target variable and no activation function in hidden layer: although simpler than the one used for the logistic cost function, it's a proficuous field for math lovers.

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Comment by Eduardo Vinas on April 25, 2018 at 4:29am

In the "Before" calculation, the last steps, g'(x)=g'(f(3)).10, why f(3)? We said that x=2, so, could it be the following instead?

"g'(x)=g'(f(2)).10"

Comment by Emanuel Woiski on December 30, 2017 at 12:41am

Thanks for sharing. Cheers.

Comment by David Barnes Peatling on October 10, 2017 at 8:26pm

I feel like this lends more understandable description to some of my old analysis shop's best practices (and i'm excited to translate this for mental health purposes) - thanks for this generally mind-calming share

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