Truncated EM Scheme for Multiple-Delay SDEs with Irregular Coefficients

핵심 개념

Truncated EM scheme handles superlinear terms in coefficients efficiently.

초록

The paper focuses on a numerical scheme for multiple-delay stochastic differential equations with irregular coefficients. The truncated Euler-Maruyama scheme is employed to handle superlinear terms in coefficients, ensuring convergence rates at time T in both L1 and L2 senses. The convergence rates over a finite time interval are also discussed, showing that the number of delay variables does not affect the convergence rates. The study includes numerical experiments on a stochastic volatility model to validate theoretical results.

통계

Under given conditions, convergence rates at time T in both L1 and L2 senses are shown.
Convergence rates over a finite time interval [0, T] are obtained.

인용구

"The contributions include establishing the TEMS for superlinear MDSDEs with partially Hölder continuous drifts and locally Hölder continuous diffusion coefficients."
"The numerical simulation for the stochastic volatility model verifies the reliability of the theoretical results."

핵심 통찰 요약

The truncated EM scheme for multiple-delay SDEs with irregular coefficients and application to stochastic volatility model

by Zhuoqi Liu,Z... 게시일 arxiv.org 03-19-2024

https://arxiv.org/pdf/2403.11178.pdf

더 깊은 질문

How do implicit schemes compare to explicit schemes in approximating SDEs

Implicit schemes are often used to approximate stochastic differential equations (SDEs) with superlinear coefficients, as explicit schemes may diverge for such cases. While explicit schemes like the Euler-Maruyama method are straightforward and easy to implement, they can struggle with SDEs that have superlinear growth conditions in their coefficients. On the other hand, implicit schemes involve solving equations iteratively or using advanced techniques to handle the nonlinearity of the problem more effectively. Implicit schemes tend to be more stable and accurate for a wider range of SDEs compared to explicit schemes.

What are the implications of locally Hölder continuous diffusion coefficients on numerical schemes

Locally Hölder continuous diffusion coefficients play a crucial role in numerical schemes for stochastic differential equations (SDEs). These coefficients indicate how smooth or rough the paths of the process are over small time intervals. When dealing with locally Hölder continuous diffusion coefficients, numerical methods need to account for this irregularity by adjusting their approximation techniques accordingly. The irregularity introduced by these coefficients can impact convergence rates and stability of numerical solutions. Therefore, understanding and incorporating these characteristics into numerical schemes is essential for accurately modeling systems with such properties.

How can the findings of this study be applied to real-world financial modeling beyond stochastic volatility

The findings of this study on truncated Euler-Maruyama scheme for multiple-delay stochastic differential equations (SDEs) with irregular coefficients have significant implications in real-world financial modeling beyond just stochastic volatility models. By developing efficient numerical methods that can handle complex SDEs with superlinear terms and multiple delays, researchers and practitioners can better model intricate financial systems where traditional analytical solutions may not be feasible.
These advanced numerical techniques can enhance risk management strategies, derivative pricing models, portfolio optimization algorithms, and other financial applications that rely on accurate simulations of uncertain processes governed by SDEs. Additionally, insights from this study could contribute to improving computational efficiency in analyzing market data trends, assessing investment risks under various scenarios, and designing robust trading strategies based on sophisticated mathematical models tailored to specific financial instruments or markets.