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- W4287586265 abstract "Consider a multivariate L'evy-driven Ornstein-Uhlenbeck process where the stationary distribution or background driving L'evy process is from a parametric family. We derive the likelihood function assuming that the innovation term is absolutely continuous. Two examples are studied in detail: the process where the stationary distribution or background driving L'evy process is given by a weak variance alpha-gamma process, which is a multivariate generalisation of the variance gamma process created using weak subordination. In the former case, we give an explicit representation of the background driving L'evy process, leading to an innovation term which is discrete and continuous mixture, allowing for the exact simulation of the process, and a separate likelihood function. In the latter case, we show the innovation term is absolutely continuous. The results of a simulation study demonstrate that maximum likelihood numerically computed using Fourier inversion can be applied to accurately estimate the parameters in both cases." @default.
- W4287586265 created "2022-07-25" @default.
- W4287586265 creator A5031023886 @default.
- W4287586265 date "2020-11-29" @default.
- W4287586265 modified "2023-10-16" @default.
- W4287586265 title "Calibration for multivariate L'evy-driven Ornstein-Uhlenbeck processes with applications to weak subordination" @default.
- W4287586265 doi "https://doi.org/10.48550/arxiv.2011.14542" @default.
- W4287586265 hasPublicationYear "2020" @default.
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