Cross validation for uncertain autoregressive model

Uncertain time series models have been investigated to predict future values based on imprecise observations. The existing researches focus on how to estimate unknown parameters in the uncertain time series model without considering how to determine the lag order. This paper proposes three types of...

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Vydáno v:Communications in statistics. Simulation and computation Ročník 51; číslo 8; s. 4715 - 4726
Hlavní autoři: Liu, Zhe, Yang, Xiangfeng
Médium: Journal Article
Jazyk:angličtina
Vydáno: Philadelphia Taylor & Francis 03.08.2022
Taylor & Francis Ltd
Témata:
Autoregressive models
Average testing error
Cross validation
Imprecise observations
Lag order
Parameter uncertainty
Time series
Uncertain time series
ISSN:0361-0918, 1532-4141
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Shrnutí:Uncertain time series models have been investigated to predict future values based on imprecise observations. The existing researches focus on how to estimate unknown parameters in the uncertain time series model without considering how to determine the lag order. This paper proposes three types of cross validation methods, i.e. fixed origin cross validation, rolling origin cross validation, and rolling window cross validation to choose the lag order considering the model's prediction ability, and derives corresponding calculation methods under the framework of uncertainty theory. A numerical example and a real data example illustrate our methods in detail.
Bibliografie:ObjectType-Article-1
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content type line 14
ISSN:0361-0918
1532-4141
DOI:10.1080/03610918.2020.1747077