Maximum Likelihood Estimation of the Vector AutoRegressive To Anything (VARTA) model

Fuente: arXiv
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Autori principali: Andersson, Jonas, Karlis, Dimitris
Natura: Preprint
Pubblicazione: 2025
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author Andersson, Jonas
Karlis, Dimitris
author_facet Andersson, Jonas
Karlis, Dimitris
contents The literature on multivariate time series is, largely, limited to either models based on the multivariate Gaussian distribution or models specifically developed for a given application. In this paper we develop a general approach which is based on an underlying, unobserved, Gaussian Vector Autoregressive (VAR) model. Using a transformation, we can capture the time dynamics as well as the distributional properties of a multivariate time series. The model is called the Vector AutoRegressive To Anyting (VARTA) model and was originally presented by Biller and Nelson (2003) who used it for the purpose of simulation. In this paper we derive a maximum likelihood estimator for the model and investigate its performance. We also provide diagnostic analysis and how to compute the predictive distribution. The proposed approach can provide better estimates about the forecasting distributions which can be of every kind not necessarily Gaussian distributions as for the standard VAR models.
format Preprint
id arxiv_https___arxiv_org_abs_2512_00631
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Maximum Likelihood Estimation of the Vector AutoRegressive To Anything (VARTA) model
Andersson, Jonas
Karlis, Dimitris
Methodology
62M10
The literature on multivariate time series is, largely, limited to either models based on the multivariate Gaussian distribution or models specifically developed for a given application. In this paper we develop a general approach which is based on an underlying, unobserved, Gaussian Vector Autoregressive (VAR) model. Using a transformation, we can capture the time dynamics as well as the distributional properties of a multivariate time series. The model is called the Vector AutoRegressive To Anyting (VARTA) model and was originally presented by Biller and Nelson (2003) who used it for the purpose of simulation. In this paper we derive a maximum likelihood estimator for the model and investigate its performance. We also provide diagnostic analysis and how to compute the predictive distribution. The proposed approach can provide better estimates about the forecasting distributions which can be of every kind not necessarily Gaussian distributions as for the standard VAR models.
title Maximum Likelihood Estimation of the Vector AutoRegressive To Anything (VARTA) model
topic Methodology
62M10
url https://arxiv.org/abs/2512.00631