Mean-variance portfolio optimization models are sensitive to uncertainty in risk-return estimates, which may result in poor out-of-sample performance. In particular, the estimates may suffer when the number of assets considered is high and the length of the return time series is not sufficiently...

Refunds can be a major issue that e-tailers desperately want to avoid in China. One of the main reasons for customer returns is damage to goods due to improper logistics and shipping; however, proper packaging material (or technique) can significantly reduce the refund rate attributed to...

This paper analyzes a unique dataset of art auctions on eBay. We study the behavior of buyers and sellers, demand and supply, by means of a novel structural estimation approach. Our empirical framework considers the process of arrival of new bidders as well as the distribution of bidder...

Basics of Price Management -- Characteristics of Digital Pricing -- Business Models -- Revenue Models -- Pricing Process Part 1: Analysis -- Pricing Process Part 2: Strategy -- Pricing Process Part 3: Structure (3a: Price Differentiation) -- Pricing Process Part 3: Structure (3b: Price Models)...

The Web is the largest human information construct in history transforming our society. How can we understand, measure and model the Web evolution in order to design effective policies and optimize its social benefit? Early measurements of the Internet traffic and the Web graph indicated the...