Out of Stock Product Recommender

The "peanut butter problem" occurs when a customer orders a specific kind a peanut butter to be delivered in a grocery order, but the picker fulfilling the order sees that it’s not on the shelf. Which of the fifty other kinds of peanut butter should the picker select instead? This whitepaper lays out a framework for substituting out of stock items from the perspective of a retail store or order fulfillment platform