This paper formalizes and solves the problem of a central bank which has a fully structural model (assumed to be true), observes a large number of noisy indicators, and seeks to (1) extract from these indicators estimates of the relevant shocks and state variables of the economy, and (2) conduct...

this is a recent phenomenon.

We study the connections between determinacy of rational expectations equilibrium, and expectational stability or learnability of that equilibrium, in a relatively general New Keynesian model. Adoption of policies that induce both determinacy and learnability of equilibrium has been considered...