Seeds: Exponential sde solvers for fast high-quality sampling from diffusion models

M Gonzalez, N Fernandez Pinto… - Advances in …, 2024 - proceedings.neurips.cc
A potent class of generative models known as Diffusion Probabilistic Models (DPMs) has
become prominent. A forward diffusion process adds gradually noiseto data, while a model …

A class of new Magnus-type methods for semi-linear non-commutative Ito stochastic differential equations

G Yang, K Burrage, Y Komori, P Burrage, X Ding - Numerical Algorithms, 2021 - Springer
In this paper, a class of new Magnus-type methods is proposed for non-commutative Itô
stochastic differential equations (SDEs) with semi-linear drift term and semi-linear diffusion …

A new class of structure-preserving stochastic exponential Runge-Kutta integrators for stochastic differential equations

G Yang, K Burrage, Y Komori, X Ding - BIT Numerical Mathematics, 2022 - Springer
In this article, a new class of stochastic exponential Runge-Kutta (SERK) methods is
developed for solving stochastic differential equations. The proposed SERK methods can …

Split S-ROCK Methods for High-Dimensional Stochastic Differential Equations

Y Komori, K Burrage - Journal of Scientific Computing, 2023 - Springer
We propose explicit stochastic Runge–Kutta (RK) methods for high-dimensional Itô
stochastic differential equations. By providing a linear error analysis and utilizing a Strang …

Lawson schemes for highly oscillatory stochastic differential equations and conservation of invariants

K Debrabant, A Kværnø, NC Mattsson - BIT Numerical Mathematics, 2022 - Springer
In this paper, we consider a class of stochastic midpoint and trapezoidal Lawson schemes
for the numerical discretization of highly oscillatory stochastic differential equations. These …

Exponential Euler method for stiff stochastic differential equations with additive fractional Brownian noise

M Kamrani, K Debrabant, N Jamshidi - International Journal of …, 2024 - Taylor & Francis
We discuss a system of stochastic differential equations with a stiff linear term and additive
noise driven by fractional Brownian motions (fBms) with Hurst parameter H> 1 2, which arise …

[HTML][HTML] Integration of the stochastic underdamped harmonic oscillator by the θ-method

A Tocino, Y Komori, T Mitsui - Mathematics and Computers in Simulation, 2022 - Elsevier
In recent papers, a simple harmonic oscillator with additive noise has been studied by
several researchers, and it has been shown that its mean total energy increases linearly as …

B-series for SDEs with application to exponential integrators for non-autonomous semi-linear problems

AA Arara, K Debrabant, A Kværnø - arXiv preprint arXiv:2310.09179, 2023 - arxiv.org
In this paper a set of previous general results for the development of B--series for a broad
class of stochastic differential equations has been collected. The applicability of these …

Strong convergence of a GBM based tamed integrator for SDEs and an adaptive implementation

U Erdogan, GJ Lord - Journal of Computational and Applied Mathematics, 2022 - Elsevier
We introduce a tamed exponential time integrator which exploits linear terms in both the drift
and diffusion for Stochastic Differential Equations (SDEs) with a one sided globally Lipschitz …

The convergence of a numerical scheme for additive fractional stochastic delay equations with H> 12

F Mahmoudi, M Tahmasebi - Mathematics and Computers in Simulation, 2022 - Elsevier
In this paper, we investigate the strong convergence of the exponential Euler method to
stochastic delay differential equations with fractional Brownian motion (FSDDEs) of Hurst …