Automatic Portmanteau Tests with Applications to Market Risk Management
Automatic Portmanteau Tests with Applications to Market Risk Management
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自动组合测试及其在市场风险管理中的应用
DOI:
10.1177/1536867x1801700408
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发表时间:
2017-03
期刊:
影响因子:
4.8
通讯作者:
Juan Carlos Escanciano
中科院分区:
文献类型:
--
作者:
Guangwei Zhu;Zaichao Du;Juan Carlos Escanciano
In this article, we review some recent advances in testing for serial correlation, provide code for implementation, and illustrate this code's application to market risk forecast evaluation. We focus on the classic and widely used portmanteau tests and their data-driven versions. These tests are simple to implement for two reasons: First, the researcher does not need to specify the order of the tested autocorrelations, because the test automatically chooses this number. Second, its asymptotic null distribution is chi-squared with one degree of freedom, so there is no need to use a bootstrap procedure to estimate the critical values. We illustrate the wide applicability of this methodology with applications to forecast evaluation for market risk measures such as value-at-risk and expected shortfall.
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