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Persistent link: https://www.econbiz.de/10009407333
This paper proposes a three-step estimation strategy for dynamic conditional correlation models. In the first step … usual normalization. In the third step, the two-step conditional covariance and correlation matrices are regularized by … model. This yields the final, third step smoothed estimate of the conditional covariance and correlation matrices. Due to …
Persistent link: https://www.econbiz.de/10012899132
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This paper presents a family of simple nonparametric unit root tests indexed by one parameter, d, and containing Breitung's (2002) test as the special case d = 1. It is shown that (i) each member of the family with d 0 is consistent, (ii) the asymptotic distribution depends on d, and thus...
Persistent link: https://www.econbiz.de/10003728253
In many applications, covariates are not observed but have to be estimated from data. We outline some regression-type models where such a situation occurs and discuss estimation of the regression function in this context.We review theoretical results on how asymptotic properties of nonparametric...
Persistent link: https://www.econbiz.de/10009551899
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This paper considers spot variance path estimation from datasets of intraday high frequency asset prices in the presence of diurnal variance patterns, jumps, leverage effects and microstructure noise. We rely on parametric and nonparametric methods. The estimated spot variance path can be used...
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In the problem of testing the equality of k regression curves from independent samples we discuss three methods using nonparametric estimation techniques of the regression function. The first test is based on a linear combination of estimators for the integrated variance function in the...
Persistent link: https://www.econbiz.de/10009783010