How important is weight symmetry in backpropagation?
Gradient backpropagation (BP) requires symmetric feedforward and feedback connections-the same weights must be used for forward and backward passes. This "weight transport problem" (Grossberg 1987) is thought to be one of the main reasons to doubt BP's biologically plausibility. Using...
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| Format: | Article |
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Association for the Advancement of Artificial Intelligence
2017
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| Online Access: | http://hdl.handle.net/1721.1/112304 https://orcid.org/0000-0003-0076-621X https://orcid.org/0000-0002-3153-916X https://orcid.org/0000-0002-3944-0455 |