Author: Beth AllenPublisher:
ISBN:
Category :
Languages : en
Pages : 61
Book Description
˜Theœ existence of rational expectations equilibria in a large economy with noisy price observations
Author: Beth AllenThe Existence of Rational Expectations Equilibria in a Large Economy with Noisy Price Observationsn
Author: Beth Elaine AllenTHE EXISTENCE OF FULLY RATIONAL EXPECTATIONS EQUILIBRIA WITH NOISY PRICE OBSERVATIONS
Author: Beth ALLENThe Existence of Fully Rational Expectations Approximate Equilibria with Noisy Price Observations
Author: Beth AllenAssessing Rational Expectations 2
Author: Roger GuesneriePublisher: MIT Press
ISBN: 9780262262903
Category : Business & Economics
Languages : en
Pages : 498
Book Description
A theoretical assessment of the Rational Expectations Hypothesis through subjecting a collection of economic models to an "eductive stability" test. The rational expectations hypothesis (REH) dominates economic modeling in areas ranging from monetary theory, macroeconomics, and general equilibrium to finance. In this book, Roger Guesnerie continues the critical analysis of the REH begun in his Assessing Rational Expectations: Sunspot Multiplicity and Economic Fluctuations, which dealt with the questions raised by multiplicity and its implications for a theory of endogenous fluctuations. This second volume emphasizes "eductive" learning: relying on careful reasoning, agents must deduce what other agents guess, a process that differs from the standard evolutionary learning experience in which agents make decisions about the future based on past experiences. A broad "eductive" stability test is proposed that includes common knowledge and results in a unique "rationalizable expectations equilibrium." This test provides the basis for Guesnerie's theoretical assessment of the plausibility of the REH's expectational coordination, emphasizing, for different categories of economic models, conditions for the REH's success or failure. Guesnerie begins by presenting the concepts and methods of the eductive stability analysis in selected partial equilibrium models. He then explores to what extent general equilibrium strategic complementarities interfere with partial equilibrium considerations in the formation of stable expectations. Guesnerie next examines two issues relating to eductive stability in financial market models, speculation and asymmetric price information. The dynamic settings of an infinite horizon model are then taken up, and particular standard and generalized saddle-path solutions are scrutinized. Guesnerie concludes with a review of general questions and some "cautious" remarks on the policy implications of his analysis.
Rational Expectations Equilibrium in an Economy with Segmented Capital Asset Markets
Author: Amin H. AmershiPublisher:
ISBN:
Category : Capital market
Languages : en
Pages : 76
Book Description
Dynamic Noisy Rational Expectations Equilibrium with Insider Information
Author: Jerome DetemplePublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
We study equilibria in multi-asset and multi-agent continuous-time economies with asymmetric information and bounded rational noise traders. We establish existence of two equilibria. First, a full communication one where the informed agents' signal is disclosed to the market, and static policies are optimal. Second, a partial communication one where the signal disclosed is affine in the informed and noise traders' signals, and dynamic policies are optimal. Here, information asymmetry creates demand for two public funds, as well as a dark pool where private information trades can be implemented. Markets are endogenously complete and equilibrium returns have a three factor structure, with stochastic factors and loadings. Results are valid for constant absolute risk averse investors; general vector diffusions for fundamentals; non-linear terminal payoffs, and non-Gaussian noise trading. Asset price dynamics and public information flows are endogenous, and rational expectations equilibria are special cases of the general results.
Rational Expectations Equilibrium in a Large Economy with Segmented Asset Markets
Author: Buddhavarapu Sailesh RamamurtiePublisher:
ISBN:
Category :
Languages : en
Pages : 378
Book Description
On Existence and Uniqueness of Equilibrium in a Class of Noisy Rational Expectations Models
Author: Bradyn M. Breon-DrishPublisher:
ISBN:
Category :
Languages : en
Pages : 75
Book Description
I study a general class of noisy rational expectations models that nests the standard Grossman and Stiglitz (1980) and Hellwig (1980) models, but relaxes the usual assumption of joint normality of asset payoffs and supply, and allows for more general signal structures. I provide a constructive proof of existence of equilibrium, characterize the price function, and provide sufficient conditions for uniqueness within the class of equilibria with continuous price functions, which are met by both the Grossman and Stiglitz (1980) model and the Hellwig (1980) model with a continuum of investors. My solution approach does not rely on the typical "conjecture and verify" method, and I exhibit a number of non-normal examples in which asset prices can be characterized explicitly and in closed form. The results presented here open up a broad class of models for applied work. To illustrate the usefulness of generalizing the standard model, I show that in settings with non-normally distributed payoffs, shocks to fundamentals may be amplified purely due to learning effects, price drifts can arise naturally, and the disagreement-return relation depends in a novel way on return skewness.
Numerical Methods in Economics
Author: Kenneth L. JuddPublisher: MIT Press
ISBN: 9780262100717
Category : Business & Economics
Languages : en
Pages : 662
Book Description
To harness the full power of computer technology, economists need to use a broad range of mathematical techniques. In this book, Kenneth Judd presents techniques from the numerical analysis and applied mathematics literatures and shows how to use them in economic analyses. The book is divided into five parts. Part I provides a general introduction. Part II presents basics from numerical analysis on R^n, including linear equations, iterative methods, optimization, nonlinear equations, approximation methods, numerical integration and differentiation, and Monte Carlo methods. Part III covers methods for dynamic problems, including finite difference methods, projection methods, and numerical dynamic programming. Part IV covers perturbation and asymptotic solution methods. Finally, Part V covers applications to dynamic equilibrium analysis, including solution methods for perfect foresight models and rational expectation models. A website contains supplementary material including programs and answers to exercises.