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在深度学习中，激活函数（Activation Function）是神经网络的灵魂。它不仅赋予网络非线性能力，还决定了训练的稳定性和模型性能。那么，激活函数到底是什么？为什么我们非用不可？有哪些经典函数？又该如何选择？
Медведев вышел в финал турнира в Дубае17:59，更多细节参见雷电模拟器官方版本下载
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Angry backbench Labour MPs have attacked ministers over the student loans crisis, saying graduates are being “outrageously scammed”.