Abstract
We consider the Cramér-type moderate deviations for the log-likelihood ratio of the inhomogeneous Ornstein–Uhlenbeck processes in the stationary and explosive cases. The relative error of tail probability of the log-likelihood ratio is quantified by deviation inequalities for multiple Wiener–Itô integrals and mod-ϕ convergence approach. As the special cases, we get the Cramér-type moderate deviations of the Ornstein–Uhlenbeck process and α-Wiener bridge.
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