Geodesic
A generalized mean-reverting equation and applications
ESAIM: Probability and Statistics, Tome 18 (2014), pp. 799-828

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Consider a mean-reverting equation, generalized in the sense it is driven by a 1-dimensional centered Gaussian process with Hölder continuous paths on [0,T] (T> 0). Taking that equation in rough paths sense only gives local existence of the solution because the non-explosion condition is not satisfied in general. Under natural assumptions, by using specific methods, we show the global existence and uniqueness of the solution, its integrability, the continuity and differentiability of the associated Itô map, and we provide an Lp-converging approximation with a rate of convergence (p ≫ 1). The regularity of the Itô map ensures a large deviation principle, and the existence of a density with respect to Lebesgue's measure, for the solution of that generalized mean-reverting equation. Finally, we study a generalized mean-reverting pharmacokinetic model.

DOI : 10.1051/ps/2014002
Classification : 60H10
Keywords: stochastic differential equations, rough paths, large deviation principle, mean-reversion, gaussian processes 
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     author = {Marie, Nicolas},
     title = {A generalized mean-reverting equation and applications},
     journal = {ESAIM: Probability and Statistics},
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     year = {2014},
     doi = {10.1051/ps/2014002},
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Marie, Nicolas. A generalized mean-reverting equation and applications. ESAIM: Probability and Statistics, Tome 18 (2014), pp. 799-828. doi: 10.1051/ps/2014002

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