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Re:The first person to hack the iPhone is building a self-dr... by walrus on Wednesday December 16, 2015 @04:56PM (#10747659)
> The experts in ML are still proud of the fact that they figured out the chain rule...

I assume you're talking about using backpropagation with gradient descent. Backpropagation itself isn't all that interesting. The interesting part is that it works for practical problems and doesn't get stuck in shallow local minima.

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