[KongchangAI]
Verified65% confidenceFactExact time

Sigmoid函数存在梯度消失问题:当输入绝对值较大时,其导数趋近于0,导致反向传播时梯度逐层衰减

3
Sources
65%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026

Sources

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https://kongchang.com/claim/47623
API
curl https://kongchang.com/api/v1/knowledge/claims/47623
MCP
get_claim(id=47623)