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梯度 #21

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AwesomeYuer opened this issue Jan 18, 2020 · 0 comments
Open

梯度 #21

AwesomeYuer opened this issue Jan 18, 2020 · 0 comments

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@AwesomeYuer
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梯度这个概念在你选择方向时能够给你启发。很多人从直觉出发,觉得该补短板,另一些人则觉得,该把长板变得更长。第一类人会和你讲木桶理论,第二类人会和你讲长板理论,每一类都有很多成功的例子,也有很多失败的教训。

于是很多人就不知道该用哪一个理论了。事实上你今天学了梯度理论后,就很容易作决断了,那就是在任何时刻算出梯度,然后沿着最陡,但是收益最大的路径前进就好。

在增加长方体体积时,显然是在采用补短板的策略,但是在增加圆柱体体积时,就看情况而定了,如果高度太低,它是严重的短板,需要弥补,但是只要它超过圆柱体半径的一半时,就要增加长板(半径)的优势了。

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