While a fast-growing body of research has looked at how the advent and diffusion of e-commerce has affected prices, much less work has investigated e-commerce's impact on the number and type of firms operating in an industry. This paper theoretically and empirically takes up the question of...

We review major changes in the economics of the US retail sector over the past 15-20 years and discuss what these portend for the future evolution of retail. The sector has been shrinking in relative size over the long term, though this stopped around the onset of the Great Recession. Retail has...

We propose an inverse optimization based methodology to determine market structure from commodity and transportation prices. The methods are appropriate for locational marginal price based electricity markets where prices are shadow prices in the centralized optimization used to clear the...