Problem definition: Omnichannel retailers interact with customers both online and offline. So far, they have used this richer information to optimize the sales process by designing the right channel and supply chain structures, and by personalizing offer, pricing and promotions. We advance an...

Fast-fashion retailers such as Zara offer continuously changing assortments and use minimal in-season promotions. Their clearance pricing problem is thus challenging because it involves comparatively more different articles of unsold inventory with less historical price data points. Until 2007,...