在 Python 中獲取兩個多維陣列的內積
要獲取兩個多維陣列的內積,請在 Python 中使用 numpy.inner() 方法。1-D 陣列向量的普通內積,在更高維度中,是對最後幾個軸進行求和乘積。引數是 1 和 b,兩個向量。如果 a 和 b 是非標量,它們的最後維度必須匹配。
步驟
首先,匯入所需的庫 -
import numpy as np
使用 numpy array() 方法建立兩個二維陣列 −
arr1 = np.array([[5, 10], [15, 20]]) arr2 = np.array([[6, 12], [18, 24]])
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)要獲取兩個多維陣列的內積,請在 Python 中使用 numpy.inner() 方法。1-D 陣列向量的普通內積,在更高維度中,是對最後幾個軸進行求和乘積 −
print("\nResult (Inner Product)...\n",np.inner(arr1, arr2))示例
import numpy as np
# Creating two numpy Two-Dimensional array using the array() method
arr1 = np.array([[5, 10], [15, 20]])
arr2 = np.array([[6, 12], [18, 24]])
# 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 multi-dimensional arrays, use the numpy.inner() method in Python
print("\nResult (Inner Product)...\n",np.inner(arr1, arr2))輸出
Array1... [[ 5 10] [15 20]] Array2... [[ 6 12] [18 24]] Dimensions of Array1... 2 Dimensions of Array2... 2 Shape of Array1... (2, 2) Shape of Array2... (2, 2) Result (Inner Product)... [[150 330] [330 750]]
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