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Price variations observed at speculative markets exhibit positive autocorrelation and cross correlation among a set of assets, stock market indices, exchange rates etc. A particular problem in investigating multivariate volatility processes arises from the high dimensionality implied by a...
Persistent link: https://www.econbiz.de/10009612567
linear state space representation. We provide a simulation study and apply the test to the HFDF96 data set. Our results …
Persistent link: https://www.econbiz.de/10009578026
The small sample properties of two types of Chow tests are investigated in the context of multiple time series models. It is found that the tests may have substantially distorted size if the sample size is not large relative to the number of parameters in the model under study. In particular the...
Persistent link: https://www.econbiz.de/10009612028
Theory in time series analysis is often developed in the context of finite-dimensional models for the data generating …
Persistent link: https://www.econbiz.de/10009660380
theory developed shows validity of the proposed bootstrap procedure for a large class of periodogram statistics. For …
Persistent link: https://www.econbiz.de/10009614876
The bootstrap is a method for estimating the distribution of an estimator or test statistic by resampling one’s data or a model estimated from the data. The methods that are available for implementing the bootstrap and the accuracy of bootstrap estimates depend on whether the data are a random...
Persistent link: https://www.econbiz.de/10009614877
A particular version of the tests of Robinson (1994) for testing stochastic cycles in macroeconomic time series is proposed in this article. The tests have a standard limit distribution and are easy to implement in raw time series. A Monte Carlo experiment is conducted, studying the size and the...
Persistent link: https://www.econbiz.de/10009611541
We propose in this article a general time series model, whose components are modelled in terms of fractionally integrated processes. This specification allows us to consider the trend, the seasonal and the cyclical components as stochastic processes, including the unit root models as particular...
Persistent link: https://www.econbiz.de/10009612016
We propose in this article a joint test for testing simultaneously a deterministic trend component and the degree of integration of the cyclical component in a given time series. The test is directly derived from Robinson's (1994) procedure, which is based on the Lagrange Multiplier (LM)...
Persistent link: https://www.econbiz.de/10009613609
Kernel smoothing in nonparametric autoregressive schemes offers a powerful tool in modelling time series. In this paper it is shown that the bootstrap can be used for estimating the distribution of kernel smoothers. This can be done by mimicking the stochastic nature of the whole process in the...
Persistent link: https://www.econbiz.de/10009632604