Collaborative filtering by product is also called item-based collaborative filtering. In this example, JoinColumns = 'orderid'. The function tries to identify products that are often bought in the same transaction (as identified by the order_id).
Collaborative filtering by product is also called item-based collaborative filtering. In this example, JoinColumns = 'orderid'. The function tries to identify products that are often bought in the same transaction (as identified by the order_id).