按元素相乘是什么

生信喵

看到⊙: 按元素相乘，这个符号，原来是下图中的意思。

首先保证矩阵的结构相同，把对应位置的数值相乘。举个例子如下：

生信喵

类似数组相乘，每一维数目一致，“*”每一个元素相乘

KingNie

[i=s] 本帖最后由 KingNie 于 2026-7-31 16:14 编辑 [/i] That's a very clear summary! To add a term from linear algebra, this element-wise multiplication is also called the "Hadamard product" in mathematics. In Python's NumPy or PyTorch, as long as the dimensions match (or broadcasting is possible), using the * operator will produce the same effect. Regards, capcut pro