Unverified50% confidenceFactExact time
The efficiency of backpropagation comes from reusing intermediate values and error terms stored during the forward pass—the core idea of dynamic programming—allowing gradients for all parameters to be obtained in a single backward pass.
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50%
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Long-term
Relevance
7/19/2026
First Seen
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梯度下降与反向传播详解：神经网络学习机制从零拆解
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