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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。
。关于这个话题，同城约会提供了深入分析
In the 1960s, France became the third country, after the US and Soviet Union, to independently place a satellite (Astérix) into orbit, and the only country to send an animal into space and – crucially, for Félicette the catstronaut – bring it back alive. A decade later, the Franco-British Concorde flicked passengers across the Atlantic in three and a half hours and the TGV began to propel them through the countryside first at 250km/h (155mph), and then 320km/h. Then, in the late 1980s, the French space agency designed a crewed spaceplane, Hermès, that corrected for the Nasa space shuttle’s vulnerability by being integrated into its launch vehicle rather than perched atop it.
В Финляндии предупредили об опасном шаге ЕС против России09:28
一切的故事，皆来自小麦的“超能力”：经碾磨激活的谷蛋白和醇溶蛋白，在遇水后形成面筋网络，赋予面团弹性和延展性，造就了面制品极强的可塑性。