Let X ~, X 2 .... be a sequence of independent and identically distributed random variables in the domain of attraction of a stable law of order ~ and asymmetry parameter ft. This paper develops some large sample inference procedures for the population mean l/ and parameters ~ and ft. Three differen
High quantile estimation for heavy-tailed distributions
โ Scribed by N.M. Markovich
- Publisher
- Elsevier Science
- Year
- 2005
- Tongue
- English
- Weight
- 245 KB
- Volume
- 62
- Category
- Article
- ISSN
- 0166-5316
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โฆ Synopsis
Different estimators of high quantiles, such as x c p proposed in [N.M. Markovitch, U.R. Krieger, The estimation of heavy-tailed probability density functions, their mixtures and quantiles. Computer Networks 40 (3) (2002) 459-474], Weissman's estimator x w p and the POT-method are considered. Regarding the estimators x c p and x w p the asymptotic normality of the logarithms of ratios of these estimators to the true value of the quantile is proved. These estimators are applied to real data of Web sessions and pages. Furthermore, bootstrap confidence intervals of x c p and x w p are constructed for modelled data of different heavy-tailed distributions as well as for Web-traffic data.
๐ SIMILAR VOLUMES
We establish estimators for the tail index of heavy-tailed distributions. A large deviation principle is proved. An estimator with U-statistic structure is constructed and its asymptotic normality is established. An estimator based on re-sampling procedure is developed and this provides a possibilit
If a set of independent, identically distributed random vectors has heavy tails, so that the covariance matrix does not exist, there is no reason to expect that the sample covariance matrix conveys useful information. On the contrary, this paper shows that the eigenvalues and eigenvectors of the sam