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Glossary · Phase 4 · Deep learning

Backpropagation

Also written: backprop, backward pass

Working backwards from the error to find how much each weight was to blame, so each can be adjusted.

Try it now

Press Next through the forward pass and then the backward pass. Then update the weights and go again: the loss really falls.

Learn it properly

Backpropagation · The chain rule applied backwards to get every gradient. About 35 minutes.

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