Finding Dot Product Of Two Pandas Series Objects

Overview:

  • In mathematics, a dot product of two sequences is given by:

x.y = Sum(x1.y1 + x2.y2+…+xnyn)

  • A pandas Series is a one-dimensional sequence built using numpy.ndarray and bundled with numerous methods to perform computing and data analysis.
  • The dot product of two pandas series objects can be computed using the Series.dot() method.

Example:

# Example program to perform dot product

# between two pandas series objects

import pandas as pds

 

# Create pandas.Series objects

series1 = pds.Series([1, 0, 5]);

series2 = pds.Series([2, 1, 2]);

 

# Obtain dot product of two pandas Series objects

series3 = series1.dot(series2);

 

print("Series1:");

print(series1);

 

print("Series2:");

print(series2);

 

print("Dot product of Series1 and Series2");

print(series3);

 

Output:

Series1:

0    1

1    0

2    5

dtype: int64

Series2:

0    2

1    1

2    2

dtype: int64

Dot product of Series1 and Series2

12

 


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