Is “Crossover” the right name for a feature that gives you a list of marketing targets for a show, based on purchase histories?
Given a show:
Get a list of all the people who have bought tickets for that show already.
From that list of people, get a list of all the other shows that those people bought.
From that list of shows, get a list of all the people who bought tickets for THOSE shows, who have not yet bought tickets for the target show.
This logic is the same as our existing personalised recommendations logic, but it’s recommending people based on a show, rather than recommending shows based on a person.