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An MLE of the unknown parameters of co integrating vectors is presented for systems in which some variables exhibit higher orders of integration, in which there might be deterministic components, and in which the co integrating vector itself might involve variables of differing orders of...
Persistent link: https://www.econbiz.de/10012475849
In a model where a variable Y[sub t] is proportional to the present value, with constant discount rate, of expected future values of a variable y[sub t] the "spread" S[sub t]= Y[sub t] - [theta sub t] will be stationary for some [theta] whether or not y[sub t]must be differenced to induce...
Persistent link: https://www.econbiz.de/10012477190
variables may be fractionally integrated and the predictive relation may feature cointegration, we provide sup-Wald break tests …
Persistent link: https://www.econbiz.de/10012496124
unit roots in real exchange rates or the null of no cointegration between nominal exchange rates and relative prices … actual price data, unit roots and cointegration tests with a nominal size of five percent have true sizes that range from .90 …
Persistent link: https://www.econbiz.de/10012473196
In this paper we provide evidence on the presence of seasonal unit roots in aggregate U.S. data. The analysis is conducted using the approach developed by Hyllebcrg, Engle, Granger and Yoo (1990). We first derive the mechanics and asyrnptotics of the HEGY procedure for monthly data and use Monte...
Persistent link: https://www.econbiz.de/10012474842
It is well known that the distribution of statistics testing restrictions on the coefficients in time series regressions can depend on the order of integration of the regressors. In practice the order of integration is rarely blown. This paper examines two conventional approaches to this...
Persistent link: https://www.econbiz.de/10012474891
We propose a generalization of the wild bootstrap of Wu (1986) and Liu (1988) based upon perturbing the scores of M …-estimators. This "score bootstrap" procedure avoids recomputing the estimator in each bootstrap iteration, making it substantially less … costly to compute than the conventional nonparametric bootstrap, particularly in complex nonlinear models. Despite this …
Persistent link: https://www.econbiz.de/10012462529
methods for inference. However, no formal justification for the use of the bootstrap has been provided. Here we show that the … bootstrap is in general not valid, even in the simple case with a single continuous covariate when the estimator is root … neighbor matching, the standard conditions for the bootstrap are not satisfied, leading the bootstrap variance to diverge from …
Persistent link: https://www.econbiz.de/10012466349
bootstrap procedure is proposed to test distributional hypotheses, such as equality of distributions, first-order stochastic …
Persistent link: https://www.econbiz.de/10012470873
total variation distance between a bootstrap distribution and the normal distribution parameterized by the point estimate … sample of recent empirical articles that use a bootstrap for inference, we find that the conventional normal approximation is …
Persistent link: https://www.econbiz.de/10014468238