Combining p -values for Multivariate Predictive Ability Testing
通过合并 p 值检验多变量预测能力AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要的核心是多变量预测准确性比较,并以多种汇率预测作为应用。
通过合并 p 值检验多变量预测能力AI 解读 ↓
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In this article, we propose an intersection-union test for multivariate forecast accuracy based on the combination of a sequence of univariate tests. The testing framework evaluates a global null hypothesis of equal predictive ability using any number of univariate forecast accuracy tests under arbitrary dependence structures, without specifying the underlying multivariate distribution. An extensive Monte Carlo simulation exercise shows that our proposed test has very good size and power properties under several relevant scenarios, and performs well in both low- and high-dimensional settings. We illustrate the empirical validity of our testing procedure using a large dataset of 84 daily exchange rates running from January 1, 2011 to April 1, 2021. We show that our proposed test addresses inconclusive results that often arise in practice.