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How Deep Neural Networks Work

curriculum/challenges/english/blocks/how-neural-networks-work/5e9a0e9ef99a403d019610ca.md

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--questions--

--text--

Why is it better to calculate the gradient (slope) directly rather than numerically?

--answers--

It is computationally expensive to go back through the entire neural network and adjust the weights for each layer of the neural network.


It is more accurate.


There is no difference between the two methods.

--video-solution--

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