Backpropagation meaning

băkprŏpə-gāshən
A common method of training a neural net in which the initial system output is compared to the desired output, and the system is adjusted until the difference between the two is minimized.
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(computing) An error correction technique used in neural networks.
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(neurology) A phenomenon in which the action potential of a neuron creates a voltage spike both at the end of the axon, as normally, and also back through to the dendrites from which much of the original input current originated.
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Origin of backpropagation