Showing 1 - 10 of 622,210
We study the properties of generalized stochastic gradient (GSG) learning in forward-looking models. We examine how the conditions for stability of standard stochastic gradient (SG) learning both differ from and are related to E-stability, which governs stability under least squares learning. SG...
Persistent link: https://www.econbiz.de/10013318147
In this paper, we perform an in - depth investigation of relative merits of two adaptive learning algorithms with constant gain, Recursive Least Squares (RLS) and Stochastic Gradient (SG), using the Phelps model of monetary policy as a testing ground. The behavior of the two learning algorithms...
Persistent link: https://www.econbiz.de/10012724434
An economy exhibits structural heterogeneity when the forecasts of different agents have different effects on the determination of aggregate variables. Various forms of structural heterogeneity can arise and we study the important case of economies in which agents' behavior depends on forecasts...
Persistent link: https://www.econbiz.de/10011541172
We introduce the E-correspondence principle for stochastic dynamic expectations models as a tool for comparative dynamics analysis. The principle is applicable to equilibria that are stable under least squares and closely related learning rules. With this technique it is possible to study,...
Persistent link: https://www.econbiz.de/10013319530
Persistent link: https://www.econbiz.de/10011579763
Persistent link: https://www.econbiz.de/10010191433
An economy exhibits structural heterogeneity when the forecasts of different agents have different effects on the determination of aggregate variables. Various forms of structural heterogeneity can arise and we study the important case of economies in which agents' behavior depends on forecasts...
Persistent link: https://www.econbiz.de/10013320362
I provide sufficient conditions and necessary conditions for stability of a structurally heterogeneous economy under heterogeneous learning of agents. These conditions are written in terms of the structural heterogeneity independent of heterogeneity in learning. I have found an easily...
Persistent link: https://www.econbiz.de/10014203532
Adaptive learning under constant-gain allows persistent deviations of beliefs from equilibrium so as to more realistically reflect agents' attempt of tracking the continuous evolution of the economy. A characterization of these beliefs is therefore paramount to a proper understanding of the role...
Persistent link: https://www.econbiz.de/10011997475
A pitfall of expectational stability (E-stability) analysis can arise in models with multi-period expectations: if an auxiliary variable is introduced as substitute for an expectational endogenous variable in such a model, this shrinks the region of the model parameters that guarantee...
Persistent link: https://www.econbiz.de/10013044431