xorbits.pandas.Series.dot

Series.dot(other)

Compute the dot product between the Series and the columns of other.

This method computes the dot product between the Series and another one, or the Series and each columns of a DataFrame, or the Series and each columns of an array.

It can also be called using self @ other.

参数

other (Series, DataFrame or array-like) – The other object to compute the dot product with its columns.

返回

Return the dot product of the Series and other if other is a Series, the Series of the dot product of Series and each rows of other if other is a DataFrame or a numpy.ndarray between the Series and each columns of the numpy array.

返回类型

scalar, Series or numpy.ndarray

参见

DataFrame.dot

Compute the matrix product with the DataFrame.

Series.mul

Multiplication of series and other, element-wise.

提示

The Series and other has to share the same index if other is a Series or a DataFrame.

实际案例

>>> s = pd.Series([0, 1, 2, 3])  
>>> other = pd.Series([-1, 2, -3, 4])  
>>> s.dot(other)  
8
>>> s @ other  
8
>>> df = pd.DataFrame([[0, 1], [-2, 3], [4, -5], [6, 7]])  
>>> s.dot(df)  
0    24
1    14
dtype: int64
>>> arr = np.array([[0, 1], [-2, 3], [4, -5], [6, 7]])  
>>> s.dot(arr)  
array([24, 14])

This docstring was copied from pandas.core.series.Series.