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An alternative to backpropagation through time

Recurrent networks can be trained using a generalization of backpropagation, called backpropagation through time, but a gap exists between the mathematics of this learning algorithm and biological plausibility. E-prop is a biologically inspired alternative that opens up possibilities for a new generation of online training algorithms for recurrent networks.

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Fig. 1: Recurrent neural networks are composed by loops that introduce temporal dependencies among nodes activities.


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Correspondence to Eleni Vasilaki.

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Manneschi, L., Vasilaki, E. An alternative to backpropagation through time. Nat Mach Intell 2, 155–156 (2020).

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