- Finds products that are commonly purchased together within a single order.
- For example, Macbook is frequently bought together with a laptop case.
- Looks at purchase history of customers who've purchased a given product. Recommend other products purchased by customers based on their purchase history.
- For example, customers who have purchased Macbook are likely to purchase MacOs software and Macbook accessories in the future.
Products recommended from Frequently Bought Together will be a subset of Also Bought. Both methods suffer from cold start problems for new products. As such, consider falling back to Similar Items product recommendations for new products until there's sufficient purchase data. See guide on using fallback recommenders.