Counting up the pairs
You can now create DataFrame of all the permutations of movies that have been watched by the same user. This is of limited use unless you can find which movies are most commonly paired.
In this exercise, you will work with the movie_combinations DataFrame that you created in the last exercise (that has been loaded for you), and generate a new DataFrame containing the counts of occurrences of each of the pairs within.
Den här övningen är en del av kursen
Building Recommendation Engines in Python
Interaktiv övning med praktiskt arbete
Testa den här övningen genom att slutföra den här exempelkoden.
# Calculate how often each item in movies_a occurs with the items in movies_b
combination_counts = movie_combinations.____(['movie_a', 'movie_b']).____()
# Inspect the results
print(combination_counts.head())