...与y对xi的偏导数成正比，即(5.11)这个概念称为梯度法(gradient ascent)。(2) 设y为某些中间变量xi的函数，而每个xi又为变量z的函数。
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batch gradient ascent 批量梯度上升法
gradient ascent method 梯度上升方法
gradient ascent algorithm 梯度上升算法
Stochastic Gradient Ascent 提出的随机梯度上升
gradient steepest ascent 梯度下降法
It was built originally because vehicles could not cope with the 27% gradient so it was suggested that switchbacks of hair pin bends were built thereby making the ascent or descent more manageable.
它始建初衷是由于车辆无法适应27%的坡度，因此有人建议，将其建成发夹般弯曲的盘山路以使上坡或下坡更容易些。
Rolling stock's infra long ascent, steep gradient ignore to have heartless condition should trample once brake.
车辆在下长坡、陡坡时不管有无情况都应该踩一下刹车。
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