Results 1 to 10 of about 56,489 (266)

A Unified Test for the AR Error Structure of an Autoregressive Model

open access: yesAxioms, 2022
A direct application of autoregressive (AR) models with independent and identically distributed (iid) errors is sometimes inadequate to fit the time series data well.
Xinyi Wei   +4 more
doaj   +3 more sources

Vector auto-regressive model (VAR) results’ versus auto-regressive distributive lags model (ARDL) results’ [PDF]

open access: yesMaǧallaẗ Al-Buḥūṯ Al-Mālīyyaẗ wa Al-Tiğāriyyaẗ, 2021
The paper aims to test the possibility of getting the same results when applying two different econometric models in testing the relation between the development of financial sector and the economic growth in Egypt.
rania moawad
doaj   +1 more source

Two-Threshold-Variable Integer-Valued Autoregressive Model

open access: yesMathematics, 2023
In the past, most threshold models considered a single threshold variable. However, for some practical applications, models with two threshold variables may be needed. In this paper, we propose a two-threshold-variable integer-valued autoregressive model
Jiayue Zhang, Fukang Zhu, Huaping Chen
doaj   +1 more source

Variable Selection for the Spatial Autoregressive Model with Autoregressive Disturbances

open access: yesMathematics, 2021
Along with the rapid development of the geographic information system, high-dimensional spatial heterogeneous data has emerged bringing theoretical and computational challenges to statistical modeling and analysis.
Xuan Liu, Jianbao Chen
doaj   +1 more source

Saturation in autoregressive models [PDF]

open access: yesNotas Económicas, 2006
In this paper, we extend the impulse saturation algorithm to a class of dynamic models. We show that the procedure is still correctly sized for stationary AR(1) processes, independently of the number of splits used for sample partitions. We derive theoretical power when there is an additive outlier in the data, and present simulation evidence showing ...
Carlos Santos, David Hendry
openaire   +6 more sources

Autoregressive Diffusion Models

open access: yesCoRR, 2021
We introduce Autoregressive Diffusion Models (ARDMs), a model class encompassing and generalizing order-agnostic autoregressive models (Uria et al., 2014) and absorbing discrete diffusion (Austin et al., 2021), which we show are special cases of ARDMs under mild assumptions. ARDMs are simple to implement and easy to train. Unlike standard ARMs, they do
Emiel Hoogeboom   +5 more
openaire   +3 more sources

Estimation of parameters of autoregressive models with fractional differences in the presence of additive noise

open access: yesВестник Самарского университета: Естественнонаучная серия, 2023
For modeling in time series, models with fractional differences are widely used. The best known model is the ARFIMA (autoregressive fractionally integrated moving average) model.
Dmitriy V. Ivanov
doaj   +1 more source

Autoregressive optimal transport models

open access: yesJournal of the Royal Statistical Society Series B: Statistical Methodology, 2023
Abstract Series of univariate distributions indexed by equally spaced time points are ubiquitous in applications and their analysis constitutes one of the challenges of the emerging field of distributional data analysis. To quantify such distributional time series, we propose a class of intrinsic autoregressive models that operate in the
Changbo Zhu, Hans-Georg Müller
openaire   +3 more sources

Seasonal functional autoregressive models [PDF]

open access: yesJournal of Time Series Analysis, 2021
Functional autoregressive models are popular for functional time series analysis, but the standard formulation fails to address seasonal behaviour in functional time series data. To overcome this shortcoming, we introduce seasonal functional autoregressive time series models.
Atefeh Zamani   +3 more
openaire   +1 more source

Random autoregressive models: A structured overview [PDF]

open access: yesEconometric Reviews, 2021
41 pages, 1 figure, 1 ...
de Andrade Serra, P.J.   +2 more
openaire   +4 more sources

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