Hadamard product

Element-wise product.

The distinction between Hadamard product and matrix product in python:

For numpy.ndarray objects, * performs elementwise multiplication, and matrix multiplication must use a function call (numpy.dot). For numpy.matrix objects, * performs matrix multiplication, and elementwise multiplication requires function syntax.

That is to say, when the variable type is numpy.ndarray, ∗ represents the Hadamard product; when the variable type is numpy.matrix,∗ represents the matrix product.

 

https://blog.csdn.net/Flying_sfeng/article/details/79330336

 

 

 

 

 

 

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