Results 11 to 20 of about 275,098 (284)

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

open access: greenBulletin of the Australian Mathematical Society, 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
Robert E. Gaunt
openalex   +3 more sources

The extended gamma distribution with regression model and applications

open access: yesAIMS Mathematics, 2021
This paper introduces a new extension of the gamma distribution, named as a new extended gamma distribution, via mixture representation of xgamma and gamma distributions.
Emrah Altun   +3 more
doaj   +2 more sources

Mixtures of Variance-Gamma Distributions [PDF]

open access: green, 2013
A mixture of variance-gamma distributions is introduced and developed for model-based clustering and classification. The latest in a growing line of non-Gaussian mixture approaches to clustering and classification, the proposed mixture of variance-gamma distributions is a special case of the recently developed mixture of generalized hyperbolic ...
Sharon M. McNicholas   +2 more
openalex   +3 more sources

An ECM algorithm for Skewed Multivariate Variance Gamma Distribution in\n Normal Mean-Variance Representation [PDF]

open access: green, 2015
Normal mean-variance mixture distributions are widely applied to simplify a model's implementation and improve their computational efficiency under the Maximum Likelihood (ML) approach. Especially for distributions with normal mean-variance mixtures representation such as the multivariate skewed variance gamma (MSVG) distribution, it utilises the ...
Thanakorn Nitithumbundit, Jennifer Chan
  +5 more sources

No country for old distributions? On the comparison of implied option parameters between the Brownian motion and variance gamma process

open access: greenThe Quarterly Review of Economics and Finance, 2021
Abstract Advanced stochastic approaches are often suggested as a solution to real-world derivative pricing inconsistencies like the non-linearity of the implied volatility smile. Using a novel high-frequency data set with over one million option trades and corresponding order books from the German market, we compare the normal distribution approach ...
Markus Ulze   +2 more
openalex   +4 more sources

The Analytical Formula for the Distribution Function of the Variance Gamma Process and its Application to Option Pricing

open access: greenSSRN Electronic Journal, 2012
In this paper we primarily obtain the explicit formulas for the distribution function of the variance gamma process. The formulas are based on values of hypergeometric functions. This result is applied to European option pricing. Basing on the established formulas, we get the prices of binary options, as long as the price of European call which was ...
Roman V. Ivanov
openalex   +2 more sources

ON THE CUMULATIVE DISTRIBUTION FUNCTION OF THE VARIANCE-GAMMA DISTRIBUTION

open access: diamondBulletin of the Australian Mathematical Society
AbstractWe 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 deduce exact formulas for the cumulative distribution function of the product of two ...
Robert E. Gaunt
openalex   +5 more sources

EM Algorithms for Multivariate Skewed Variance Gamma Distribution with Unbounded Densities and Applications

open access: green, 2017
The multivariate skewed variance gamma (VG) distribution is useful for modelling data with heavy-tails and high density around the location parameter. When the shape parameter is sufficiently small, the density function is unbounded at the location parameter. In this thesis, we proposed three modifications to appropriately bound the likelihood function
Thanakorn Nitithumbundit
openalex   +3 more sources

Pricing European Options under Stochastic Volatility Models: Case of Five-Parameter Variance-Gamma Process [PDF]

open access: yesJournal of Risk and Financial Management, 2022
The paper builds a Variance-Gamma (VG) model with five parameters: location (μ), symmetry (δ), volatility (σ), shape (α), and scale (θ); and studies its application to the pricing of European options.
A H nzokem
semanticscholar   +1 more source

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