Results 1 to 10 of about 5,585,321 (191)

The variance-gamma ratio distribution [PDF]

open access: yesComptes Rendus. Mathématique, 2023
Let $X$ and $Y$ be independent variance-gamma random variables with zero location parameter; then the exact probability density function of the ratio $X/Y$ is derived.
Gaunt, Robert E., Li, Siqi
doaj   +3 more sources

On the cumulative distribution function of the variance-gamma distribution [PDF]

open access: yes, 2023
We obtain exact formulas for the cumulative distribution function of the variance-gamma distribution, as infinite series involving the modified Bessel function of the second kind and the modified Lommel function of the first kind. From these formulas, we
Gaunt, Robert E.
core   +14 more sources

Bayesian estimation of rainfall dispersion in Thailand using gamma distribution with excess zeros [PDF]

open access: yesPeerJ, 2022
The gamma distribution is commonly used to model environmental data. However, rainfall data often contain zero observations, which violates the assumption that all observations must be positive in a gamma distribution, and so a gamma model with excess ...
Wansiri Khooriphan   +2 more
doaj   +2 more sources

SIFAT-SIFAT DAN KEJADIAN KHUSUS DISTRIBUSI GAMMA

open access: yesBarekeng, 2021
The gamma distribution is one of special continuous random variable distribution with scale parameter  and shape parameter  where  is positive real numbers.
Royke Yohanes Warella   +2 more
doaj   +1 more source

Variance Gamma (nonlocal) equations

open access: yesModern Stochastics: Theory and Applications, 2023
Some equations are provided for the Variance Gamma process using the definition other than that based on a time-changed Brownian motion. A new nonlocal equation is obtained involving generalized Weyl derivatives, which is true even in the drifted case ...
Fausto Colantoni
doaj   +1 more source

Asymptotic Normality in Linear Regression with Approximately Sparse Structure

open access: yesMathematics, 2022
In this paper, we study the asymptotic normality in high-dimensional linear regression. We focus on the case where the covariance matrix of the regression variables has a KMS structure, in asymptotic settings where the number of predictors, p, is ...
Saulius Jokubaitis, Remigijus Leipus
doaj   +1 more source

Estimation of value at risk for stock prices in mobile phone industry

open access: yesData Analytics and Applied Mathematics, 2021
Risk management and market losses prediction played a vital role in the financial sector. Value-at-Risk (VaR) is one of the effective measures for financial risk management.
Dr. Wendy Ling Shin Yie   +2 more
doaj   +1 more source

Counterexamples to the classical central limit theorem for triplewise independent random variables having a common arbitrary margin

open access: yesDependence Modeling, 2021
We present a general methodology to construct triplewise independent sequences of random variables having a common but arbitrary marginal distribution F (satisfying very mild conditions).
Beaulieu Guillaume Boglioni   +2 more
doaj   +1 more source

Bayesian Approach for estimating the unknown Scale parameter of Erlang Distribution Based on General Entropy Loss Function

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2023
We are used Bayes estimators for unknown scale parameter  when shape Parameter  is known of Erlang distribution. Assuming different informative priors for unknown scale  parameter.
Jinan A. Naser Al-obedy
doaj   +1 more source

DISTRIBUSI INVERS GAMMA PADA INFERENSI BAYESIAN

open access: yesMedia Statistika, 2010
One of the methods which can be used in statistical inferences  is Bayesian inference. It is combine sample distribution and prior distribution, that can be resulted posterior distribution.
Sugito Sugito, Dwi Ispriyanti
doaj   +1 more source

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