在 Python 中獲取兩個陣列的內積
要獲取兩個陣列的內積,請在 Python 中使用 numpy.inner() 方法。1-D 陣列向量的普通內積,在高維度,最後軸上的求和乘積。引數是 1 和 b,兩個向量。如果 a 和 b 是非標量,則它們的最後一個維度必須匹配。
步驟
首先,匯入所需的庫 −
import numpy as np
使用 array() 方法建立兩個 numpy 一維陣列 −
arr1 = np.array([5, 10, 15]) arr2 = np.array([20, 25, 30])
顯示陣列 −
print("Array1...\n",arr1)
print("\nArray2...\n",arr2)檢查兩個陣列的維度 −
print("\nDimensions of Array1...\n",arr1.ndim)
print("\nDimensions of Array2...\n",arr2.ndim)檢查兩個陣列的形狀 −
print("\nShape of Array1...\n",arr1.shape)
print("\nShape of Array2...\n",arr2.shape)要獲取兩個陣列的內積,請使用 numpy.inner() 方法 −
print("\nResult (Inner Product)...\n",np.inner(arr1, arr2))
示例
import numpy as np
# Creating two numpy One-Dimensional array using the array() method
arr1 = np.array([5, 10, 15])
arr2 = np.array([20, 25, 30])
# Display the arrays
print("Array1...\n",arr1)
print("\nArray2...\n",arr2)
# Check the Dimensions of both the arrays
print("\nDimensions of Array1...\n",arr1.ndim)
print("\nDimensions of Array2...\n",arr2.ndim)
# Check the Shape of both the arrays
print("\nShape of Array1...\n",arr1.shape)
print("\nShape of Array2...\n",arr2.shape)
# To get the Inner product of two arrays, use the numpy.inner() method in Python
print("\nResult (Inner Product)...\n",np.inner(arr1, arr2))輸出
Array1... [ 5 10 15] Array2... [20 25 30] Dimensions of Array1... 1 Dimensions of Array2... 1 Shape of Array1... (3,) Shape of Array2... (3,) Result (Inner Product)... 800
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