新手做网站的详细步骤/厦门seo百度快照优化

• input shape = (2,3,4), shape = (4,0,2), output shape = (4,3,2) # 中间维度维持不变
• input shape = (2,3,4), shape = (2,0,0), output shape = (2,3,4) # 后两个维度维持不变

-1是最后进行推导的，先保证其他数字被照顾好之后，在reshape前后数组的size不变的约束下，推导出该位置的维度。通常来说，最多只有一个-1，但是在有 -4 的情况下，可以有两个 -1。

• input shape = (2,3,4), shape = (6,1,-1), output shape = (6,1,4)
• input shape = (2,3,4), shape = (3,-1,8), output shape = (3,1,8)
• input shape = (2,3,4), shape=(-1,), output shape = (24,)

-2可以包括多个维度。当其他位置都有对应的维度之后，-2就来容纳剩下的多个维度。

• input shape = (2,3,4), shape = (-2,), output shape = (2,3,4) # -2来容纳所有的维度
• input shape = (2,3,4), shape = (2,-2), output shape = (2,3,4) # 2占据了一个维度，-2容纳剩下的(3,4)
• input shape = (2,3,4), shape = (-2,1,1), output shape = (2,3,4,1,1) # (1,1)是新增的两个维度，-2将(2,3,4)给容纳

-3是将对应的两个维度合成一个维度，合成之后的维度值为之前两个维度的乘积。

• input shape = (2,3,4), shape = (-3,4), output shape = (6,4)
• input shape = (2,3,4,5), shape = (-3,-3), output shape = (6,20)
• input shape = (2,3,4), shape = (0,-3), output shape = (2,12)
• input shape = (2,3,4), shape = (-3,-2), output shape = (6,4)

-4是将一个维度拆分为两个，-4后面跟两个数字，代表拆分后的维度，其中可以有-1。

• input shape = (2,3,4), shape = (-4,1,2,-2), output shape =(1,2,3,4) # 将2拆分为1X2，剩下的3,4传递给-2
• input shape = (2,3,4), shape = (2,-4,-1,3,-2), output shape = (2,1,3,4) # 将3拆分为1X3，剩下的4传递给-2