shapes (4,) and (2,) not aligned: 4 (dim 0) != 2 (dim 0)

This error message typically occurs when you are trying to perform an operation on two arrays that have different sizes along a particular dimension. In this case, you are trying to align arrays with shapes (4,) and (2,) which have different sizes along the first dimension.

To fix this error, you need to ensure that the arrays you are working with have compatible shapes. You can do this by reshaping or broadcasting one or both of the arrays to have the same shape as the other array, or by using operations that are designed to work with arrays of different shapes, such as concatenate or stack.

相关问题

为什么affine_forward怎么修改都会出现shapes () and ) not aligned: (dim 1) != (dim 0)

这个错误通常是由于输入的x和w的形状不兼容引起的。在affine_forward函数中，x和w的形状必须满足矩阵乘法的规则，即x的第二个维度必须等于w的第一个维度，否则就会出现shapes not aligned的错误。因此需要确保x和w的形状是兼容的，才能进行矩阵乘法运算。在修改代码时，需要注意确保x和w的形状是兼容的，也可以使用reshape函数来调整它们的形状。

ValueError: shapes (3,) and (4,) not aligned: 3 (dim 0) != 4 (dim 0)

这个错误通常是因为两个数组的形状不兼容导致的。可以检查一下你的代码，看看哪里出现了这个问题。一般来说，这个错误可能是因为你在进行矩阵乘法或者其他需要匹配形状的操作时，两个数组的形状不匹配。你需要确保你的操作能够正确地匹配两个数组的形状，才能避免这个错误。如果你无法解决这个问题，可以提供更多的代码和错误信息，以便我能够更好地帮助你。