In this article, we describe jackknife2, a new prefix command for jackknifing linear estimators. It takes full advantage of the available leave-one-out formula, thereby allowing for substantial reduction in computing time. Of special note is that jackknife2 allows the user to compute cross-validation and diagnostic measures that are currently not available after ivregress 2sls, xtreg, and xtivregress.

中文翻译：

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快速的留一法进行推理，模型选择和诊断检查

在本文中，我们描述了jackknife2，这是用于增加线性估计量的新前缀命令。它充分利用了可用的留一法公式，从而大大减少了计算时间。特别值得注意的是，jackknife2允许用户计算在ivregress 2sls，xtreg和xtivregress之后当前不可用的交叉验证和诊断措施。