its the implementation of Approri algo for product recommendation as customer buy related product of other product . Example relevent product of each other
Its the approri algo mathmetical implementation .
Ex when a person go for shopping and purchase a product this algo help shop keeper to inform him the relevent product of customer purchasing product which a part of that product . so when shopkeeper inform to customer about this relevent product at a little bit low price customer buy this product as well while there was no motive to buy extra product of customer yet customer purchased .