A valid machine model is predictive, but a predictive model may not be valid. The gap between these two can be larger than many practitioners may expect.

中文翻译：

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准确的数据驱动预测并不意味着可重复性高

有效的机器模型是可预测的，但是预测模型可能无效。两者之间的差距可能比许多从业者所期望的大。