Firm level data exhibits that new exporters tend to start small, a large fraction of these drops out by the second year of exporting, and the survivors expand rapidly. To take into account this stylized fact, we propose a theory of firm behavior that assumes demand uncertainty about the...

In times of rapid macroeconomic change it would seem useful for both fiscal and monetary policy to be modified frequently. This is true for monetary policy with monthly meetings of the Open Market Committee. It is not true for fiscal policy which mostly varies with the annual Congressional...

This chapter of the Handbook of Computational Economics is mostly about research on active learning and is confined to discussion of learning in dynamic models in which the systems equations are linear, the criterion function is quadratic and the additive noise terms are Gaussian. Though there...