Unverified50% confidenceConceptExact time
信号从左到右传播、逐步算出函数值的过程叫做前向传播
1
Sources
50%
Confidence
Long-term
Relevance
7/23/2026
First Seen
Sources
Related Claims
Unverified前向传播（forward pass）描述数据从输入层经过每一层网络变换最终输出预测结果的完整流程69% similarUnverifiedThe core idea of backpropagation is to use the chain rule to decompose output error layer by layer, allowing the error signal to flow backward from the output layer to every weight parameter.63% similarUnverifiedPyTorch's forward function is the core method of nn.Module, defining the forward propagation path from input to output.61% similarVerifiedBackpropagation is essentially a dynamic programming algorithm for efficiently computing gradients, which reduces the computational complexity of gradient calculation by propagating error signals layer by layer from the output layer to the input layer and reusing intermediate computation results.61% similarUnverified自动微分分为前向模式（从输入向输出传播导数，适合输入维度远小于输出维度）和反向模式（从输出向输入反向传播梯度，适合输出维度远小于输入维度）61% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/598513API
curl https://kongchang.com/api/v1/knowledge/claims/598513MCP
get_claim(id=598513)