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spectrum of Lipschitz exponents jumps up to a much higher level after the crash. Our most striking result, therefore, is that …
Persistent link: https://www.econbiz.de/10005561749
variances of the wavelet and scaling coefficients. We use this feature of wavelets to design a statistical test for changes in …
Persistent link: https://www.econbiz.de/10011191194
By modifying and generalizing the wavelet-based approach of approximately simulating univariate long-memory processes that is available in the literature, we propose a methodology for simulating a bivariate stationary process, whose components exhibit different relationships at different scales....
Persistent link: https://www.econbiz.de/10011195167
these aspects are presented as a part of the wavelet theory in several books on wavelets, their implementation is prone to …
Persistent link: https://www.econbiz.de/10011195169
for fractionally differenced processes. We suggest that the general idea of using wavelets for estimating long memory …
Persistent link: https://www.econbiz.de/10011195182
We show that spline and wavelet series regression estimators for weakly dependent regressors attain the optimal uniform (i.e., sup-norm) convergence rate (n/log n)^{-p/(2p+d)} of Stone (1982), where d is the number of regressors and p is the smoothness of the regression function. The optimal...
Persistent link: https://www.econbiz.de/10011198597
This study examines the existence of a liquidity effect in the UK economy over different time-scales. This analysis draws from the liquidity preference framework, an approach to interest rate determination, and uses wavelet multiscale analysis in the context of a standardised regression model....
Persistent link: https://www.econbiz.de/10011242010
Measures of core inflation convey critical information about an economy. They have a direct effect on the policy-making process, particularly in inflation-targeting countries, and are utilized in forecasting and modelling exercises. In South a Africa the prices indices on which inflation is...
Persistent link: https://www.econbiz.de/10011204506
infinitely differentiablenonstationary wavelets with compact support and restricts the smoothness of nonstationary wavelets by …
Persistent link: https://www.econbiz.de/10011256901
We may find numerous works in the existing literature regarding the cohesion between oil prices and exchange rates, yet an exact shape of the relationship remains undefined. By restoring to wavelet analysis and using a rich database from Japan, this study contributes to the literature by...
Persistent link: https://www.econbiz.de/10010891031