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We compare sparse and dense representations of predictive models in macroeconomics, microeconomics and finance. To deal with a large number of possible predictors, we specify a prior that allows for both variable selection and shrinkage. The posterior distribution does not typically concentrate on a single sparse or dense model, but on a wide set of models. A clearer pattern of sparsity can onl...

This paper shows that the payoff functions in a class of dynamic games of incomplete information are nonparametrically identified under standard assumptions currently used in applied work. Models of this kind are prevalent in empirical industrial organization where, for example, firms in oligopolistic industries make discrete entry and exit decisions followed by continuous investment or pricing...

CompuP2P is an architecture for sharing of computing resources in peer-to-peer (P2P) networks. It provide resources, such as processing power, memory storage etc., to user applications that might require them. CompuP2P creates dynamic markets for different amounts of computing resources without relying on any trusted centralized entity to monitor the activities of nodes in those markets. Moreov...