Question

When you view a selection at Amazon and see "Customers who bought this (item) also bought ...," you are seeing the application of

Answer 1

Answer: collaborative filtering

Explanation:

Collaborative filtering is a technique thta helps to filter out the things that a user can like base on how other identical users react. Here, a small sample of the people with similar taste will be chosen from a larger group.

When you view a selection at Amazon and see "Customers who bought this (item) also bought ...," you are seeing the application of collaborative filtering.