activity
20072026
most citedFredholm representation of multiparameter Gaussian processes with applications to equivalence in law and series expansions

5 citations · 23 across the 28 of their papers we have counts for

collaborators

35 papers

stat.ME2026

Parameter Estimation for the Mixed Fractional Merton Jump Diffusion Model with EM Algorithm

Chidiogo Joy Agboeke, Hamidreza Maleki Almani, Dario Gasbarra +2

This paper proposes an Expectation--Maximization algorithm with Metropolis--Hastings sampling for parameter estimation in a Mixed Fractional Merton Jump Diffusion model. The model…

math.NA2026

Walk-on-Cubes Monte Carlo Simulation for nonisotropic fractional Laplace, Helmholtz, and Yukawa equations

Antti Rasila, Tommi Sottinen, Yaotong Yuan

We study the nonisotropic fractional analogs of Laplace, Helmholtz and Yukawa equations. We provide a Duffin correspondence for the Yukawa equation and a Feynman--Kac reconstructio…

econ.EM2025

Data driven modeling of multiple interest rates with generalized Vasicek-type models

Pauliina Ilmonen, Milla Laurikkala, Kostiantyn Ralchenko +2

The Vasicek model is a commonly used interest rate model, and there exist many extensions and generalizations of it. However, most generalizations of the model are either univariat…

math.PR2025

Tanaka formula for SDEs driven by fractional Brownian motion

Tommi Sottinen, Ercan Sönmez, Lauri Viitasaari

We derive a Tanaka-type formula for the solution of a stochastic differential equation (SDE) driven by fractional Brownian motion (fBm) with Hurst parameter . Whil…

q-fin.MF2024

Hedging in Jump Diffusion Model with Transaction Costs

Hamidreza Maleki Almani, Foad Shokrollahi, Tommi Sottinen

We consider the jump-diffusion risky asset model and study its conditional prediction laws. Next, we explain the conditional least square hedging strategy and calculate its closed…

math.PR2024

Discretization of integrals driven by multifractional Brownian motions with discontinuous integrands

Kostiantyn Ralchenko, Foad Shokrollahi, Tommi Sottinen

We establish the rate of convergence in the -norm for equidistant approximations of stochastic integrals with discontinuous integrands driven by multifractional Brownian motio…