如果不确定用哪个激活函数，隐藏层可以先用 ReLU，输出层按任务选择；训练中注意梯度情况，如果梯度消失或爆炸，再考虑替换或调整激活函数。
After the whole Velvet Sundown-fiasco, audio streaming competitor Spotify started adding AI disclosures through metadata in Sept. 2025, working with the Digital Data Exchange (DDEX) to allow "artists and rights holders a way to clearly indicate where and how AI played a role in the creation of a track — whether that’s AI-generated vocals, instrumentation, or post-production." However, this is separate from Spotify recommending AI-generated music to users, which we've still seen happening in 2026.
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