Python: 如何做矩陣乘法? numpy.matmul (ary1, ary2) 或 ary1 @ ary2 或 numpy.dot (ary1, ary2)

by 儲蓄保險王 · 2022-12-26

numpy.matmul (ary1, ary2):

import numpy as np

list1 = [1,2,3]

list2 = [

[3],

[2],

[1]]

a1 = np.array(list1)

a2 = np.array(list2)

print(“對list做矩陣乘法np.matmul():”,

np.matmul(list1,list2))

print(“對array做矩陣乘法np.matmul():”,

np.matmul(a1,a2))

print(“只有array能用@做矩陣乘法:”,a1 @ a2)

print(“矩陣乘法@:”,list1 @ list2)

Python: 如何做矩陣乘法? numpy.matmul (ary1, ary2) 或 ary1 @ ary2 或 numpy.dot (ary1, ary2) - 儲蓄保險王

numpy.dot()

Python: 如何做矩陣乘法? numpy.matmul (ary1, ary2) 或 ary1 @ ary2 或 numpy.dot (ary1, ary2) - 儲蓄保險王