On Size Substitution and Its Role in Assortment and Inventory Planning

The authors are grateful to the footwear retailer mentioned in Section 4, whose name is anonymized, for sharing the data set. The authors also thank the department editor, Feryal Erhun; the associate editor; and two anonymous referees for their valuable and constructive feedback, which has substantially strengthened this work. This work has benefited from the generous research support provided by the UCL School of Management and the UCLA Anderson School of Management.