A trading strategy is an algorithm that provides decision support for a trader. An ideal system suggests which stocks to buy and sell at every moment. Limited but still very useful trading strategies suggest stocks to buy, but leave the sell decisions and the decision of proportions of different stocks to the trader, or to another automatic decision mechanisim. In this paper we use a previously...

The proliferation of inexpensive video recording hardware and enormous storage capacity has enabled the collection of retail customer behavior at an unprecedented scale. The vast majority of this data is used for theft prevention and never used to better understand the customer. In what ways can this huge corpus be leveraged to improve the experience of customer and the performance of the store...

A decision maker, whose payoff is influenced by an unknown stochastic process, seeks the advice of an advisor, who may be informed about the process. We identify a sufficient condition on the correlation between the advisor’s information and the true stochastic process, called conservativeness, for which there exists a strategy D of the decision maker that will yield him an almost first-best pa...

Income was negatively associated with the mood states of confusion and tense in a sample of 406 community residents, but controls for age, sex, and education eliminated these associations.