You can guess this product affinity with a list of previous purchases. Just take a look at the 'arules' R package (https://github.com/mhahsler/arules https://gi

You can guess this product affinity with a list of previous purchases. Just take a look at the 'arules' R package (https://github.com/mhahsler/arules https://github.com/mhahsler/arules). You don't need to identify the customer. I did some work with an online supermarket some time ago and I found some interesting associations worth trying like Sliced Brioche Bread + Nutella :-) Sadly I didn't find any association like 'beer and diapers' ;-)