Assortment optimization using an attraction model in an omnichannel environment

•Introduces a discrete choice model called multichannel attraction model for omnichannel environments•Formulates corresponding assortment optimization problem as mixed integer linear program•Develops efficient heuristic method to solve omnichannel assortment optimization problem•Presents three different methods to estimate model parameters based on sales history data•Analyses widely-used omnichannel initiatives and describes impact of model parameters