Results 31 to 40 of about 183,836 (261)

Optimal Variance–Gamma approximation on the second Wiener chaos [PDF]

open access: yesJournal of Functional Analysis, 2022
In this paper, we consider a target random variable $Y \sim \CVG$ distributed according to a centered Variance--Gamma distribution. For a generic random element $F=I_2(f)$ in the second Wiener chaos with $\E[F^2]= \E[Y^2]$ we establish a non-asymptotic optimal bound on the distance between $F$ and $Y$ in terms of the maximum of difference of the first ...
Azmoodeh, Ehsan   +2 more
openaire   +3 more sources

Higher-order asymptotic corrections and their application to the Gamma Variance Model

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
We present improved methods for calculating confidence intervals and p values in situations where standard asymptotic approaches fail due to small sample sizes.
Enzo Canonero   +2 more
doaj   +1 more source

Confidence interval estimation of the common mean of several gamma populations

open access: yesPLoS ONE, 2022
Gamma distributions are widely used in applied fields due to its flexibility of accommodating right-skewed data. Although inference methods for a single gamma mean have been well studied, research on the common mean of several gamma populations are ...
Li Yan
doaj   +2 more sources

APPLICATION OF THE JSIR2S CODE PACKAGE FOR SHUTDOWN DOSE RATE CALCULATIONS ON JET [PDF]

open access: yesEPJ Web of Conferences, 2021
In this paper we present a computational exercise for shut-down dose rate calculations for the JET tokamak using the in-house developed JSIR2S code package as part of its validation.
Ambrožič Klemen   +3 more
doaj   +1 more source

Efficient Option Pricing under Levy Processes, with CVA and FVA

open access: yesFrontiers in Applied Mathematics and Statistics, 2015
We generalize the Piterbarg (2010) model to include 1) bilateral default risk as in Burgard and Kjaer (2012), and 2) jumps in the dynamics of the underlying asset using general classes of L'evy processes of exponential type.
Jimmy eLaw   +2 more
doaj   +1 more source

Deep variance gamma processes

open access: yesStat, 2023
Lévy processes are useful tools for analysis and modeling of jump‐diffusion processes. Such processes are commonly used in the financial and physical sciences. One approach to building new Lévy processes is through subordination, or a random time change.
Caitlin M. Berry, William Kleiber
openaire   +1 more source

Bayesian Option Pricing Framework with Stochastic Volatility for FX Data

open access: yesRisks, 2016
The application of stochastic volatility (SV) models in the option pricing literature usually assumes that the market has sufficient option data to calibrate the model’s risk-neutral parameters.
Ying Wang   +2 more
doaj   +1 more source

SOME PRICING TOOLS FOR THE VARIANCE GAMMA MODEL [PDF]

open access: yesInternational Journal of Theoretical and Applied Finance, 2020
We establish several closed pricing formulas for various path-independent payoffs, under an exponential Lévy model driven by the Variance Gamma process. These formulas take the form of quickly convergent series and are obtained via tools from Mellin transform theory as well as from multidimensional complex analysis.
openaire   +2 more sources

Triple the Gamma—A Unifying Shrinkage Prior for Variance and Variable Selection in Sparse State Space and TVP Models

open access: yesEconometrics, 2020
Time-varying parameter (TVP) models are very flexible in capturing gradual changes in the effect of explanatory variables on the outcome variable.
Annalisa Cadonna   +2 more
doaj   +1 more source

Option Pricing in a Dynamic Variance-Gamma Model [PDF]

open access: yes, 2011
We present a discrete time stochastic volatility model in which the conditional distribution of the logreturns is a Variance-Gamma, that is a normal variance-mean mixture with Gamma mixing density. We assume that the Gamma mixing density is time varying and follows an affine Garch model, trying to capture persistence of volatility shocks and also ...
MERCURI, LORENZO, BELLINI, FABIO
openaire   +4 more sources

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