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3min chapter
In Machines We Trust: A conversation with Geoffrey Hinton (Live)
MIT Technology Review Narrated
How to Wire Up a Back Propagation Network
Back propagation is how you take the discrepancy between a probability one that is a bird and what it's got at present. So instead of saying point five, it says point five, oh one, but it's a bird. Back propagation is just going backwards through the network to figure out which feature detector wants to be more active or less active.
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