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- Tubikanec, IreneJohannes-Kepler-University of Linz (författare)
Qualitative properties of different numerical methods for the inhomogeneous geometric Brownian motion
- Artikel/kapitelEngelska2022
Förlag, utgivningsår, omfång ...
- Elsevier BV,2022
Nummerbeteckningar
- LIBRIS-ID:oai:lup.lub.lu.se:b46ff588-c5a4-4799-b872-73a75967ee7a
- https://lup.lub.lu.se/record/b46ff588-c5a4-4799-b872-73a75967ee7aURI
- https://doi.org/10.1016/j.cam.2021.113951DOI
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- Språk:engelska
- Sammanfattning på:engelska
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- We provide a comparative analysis of qualitative features of different numerical methods for the inhomogeneous geometric Brownian motion (IGBM). The limit distribution of the IGBM exists, its conditional and asymptotic mean and variance are known and the process can be characterised according to Feller's boundary classification. We compare the frequently used Euler–Maruyama and Milstein methods, two Lie–Trotter and two Strang splitting schemes and two methods based on the ordinary differential equation (ODE) approach, namely the classical Wong–Zakai approximation and the recently proposed log-ODE scheme. First, we prove that, in contrast to the Euler–Maruyama and Milstein schemes, the splitting and ODE schemes preserve the boundary properties of the process, independently of the choice of the time discretisation step. Second, we prove that the limit distribution of the splitting and ODE methods exists for all stepsize values and parameters. Third, we derive closed-form expressions for the conditional and asymptotic means and variances of all considered schemes and analyse the resulting biases. While the Euler–Maruyama and Milstein schemes are the only methods which may have an asymptotically unbiased mean, the splitting and ODE schemes perform better in terms of variance preservation. The Strang schemes outperform the Lie–Trotter splittings, and the log-ODE scheme the classical ODE method. The mean and variance biases of the log-ODE scheme are very small for many relevant parameter settings. However, in some situations the two derived Strang splittings may be a better alternative, one of them requiring considerably less computational effort than the log-ODE method. The proposed analysis may be carried out in a similar fashion on other numerical methods and stochastic differential equations with comparable features.
Ämnesord och genrebeteckningar
- NATURVETENSKAP Matematik Beräkningsmatematik hsv//swe
- NATURAL SCIENCES Mathematics Computational Mathematics hsv//eng
- Boundary preservation
- Feller's boundary classification
- GARCH model
- Log-ODE method
- Moment preservation
- Numerical splitting schemes
Biuppslag (personer, institutioner, konferenser, titlar ...)
- Tamborrino, MassimilianoUniversity of Warwick (författare)
- Lansky, PetrInstitute of Physiology of the Academy of Sciences of the Czech Republic (författare)
- Buckwar, EvelynLund University,Lunds universitet,Matematik LTH,Matematikcentrum,Institutioner vid LTH,Lunds Tekniska Högskola,Mathematics (Faculty of Engineering),Centre for Mathematical Sciences,Departments at LTH,Faculty of Engineering, LTH,Johannes-Kepler-University of Linz(Swepub:lu)ev5875bu (författare)
- Johannes-Kepler-University of LinzUniversity of Warwick (creator_code:org_t)
Sammanhörande titlar
- Ingår i:Journal of Computational and Applied Mathematics: Elsevier BV4060377-0427
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