In this paper we present a method for using rational expectations in a linear-quadratic optimizationframework. Following the approach put forward by Sims, we solve the model through a QZdecomposition, which is generally easier to implement than the more widely used method of Blanchardand Kahn.

\\begin{abstract} Lucas (1976) pointed out, that when optimization is performed on a deterministic macro model, the resulting policy may not reflect the true optimal solution. Private agents may react to announced policies and consequently model parameters will start to drift. The aim of this...

The DUALI/DUALPC software is a system for solving quadratic-linear opimal control models. DUALI (pronounced "dual-I") provides a graphical interface for both deterministic and stochastic models as well as solvers for deterministic models and for passive learning stochastic models. DUALPC...

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