In this paper we develop pivotal inference for the final (FPE) and relative final prediction error (RFPE) of linear forecasts in stationary processes. Our approach is based on a self-normalizing technique and avoids the estimation of the asymptotic variances of the empirical autocovariances. We provide pivotal confidence intervals for the (R)FPE, develop estimates for the minimal order of a linear prediction that is required to obtain a prespecified forecasting accuracy and also propose (pivotal) statistical tests for the hypotheses that the (R)FPE exceeds a given threshold. Additionally, we provide pivotal uncertainty quantification for the commonly used coefficient of determination $R^2$ obtained from a linear prediction based on the past $p \geq 1$ observations and develop new (pivotal) inference tools for the partial autocorrelation, which do not require the assumption of an autoregressive process.
翻译:本文针对平稳过程中线性预测的最终预测误差(FPE)与相对最终预测误差(RFPE)发展了关键推断方法。我们的方法基于自标准化技术,避免了经验自协方差渐近方差的估计。我们为(R)FPE提供了关键置信区间,发展了为达到预设预测精度所需线性预测最小阶数的估计方法,并针对(R)FPE超过给定阈值的假设提出了(关键)统计检验。此外,我们为基于过去 $p \geq 1$ 个观测值的线性预测中常用的决定系数 $R^2$ 提供了关键不确定性量化,并为偏自相关函数发展了新的(关键)推断工具,这些工具无需自回归过程的假设。