Modern investors face a high-dimensional prediction problem: thousands of observable variables are potentially relevant for forecasting. We reassess the conventional wisdom on market efficiency in light of this fact. In our model economy, which resembles a typical machine learning setting, N...

Companies invest in e-business and its supporting technology for their e-business initiatives. E-business applications such as supply chain management and customer relationship management improve transaction efficiency and scope economies as well as promoting new product and service offerings...