该ETF目前首次在其上升的50日简单移动平均线处获得支撑，自其突破109.02美元的双底枢轴位以来，这是一个往往相当理想的入场点。在此处建立仓位是合理的，并且有望在其突破新形成的双底触发位126.55美元上方时进行加仓；这一底部形态始于1月23日出现的一根十字星。
直观理解一下，激活函数就像神经网络里的开关或滤镜，它决定了每个神经元应该多大程度地激活，从而使网络具备强大的表达能力。
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