因此，在构建预测模型之前，必须先划分数据。
Thus, you have to split the data before building the prediction model.
探讨了标准参照测验合格分数线的划分方法。
Finally, the article discusses how to set the qualified score in criteria-reference test.
探讨了标准参照测验合格分数线的划分方法。
Finally, the article discusses how to set the qualified score in criteria-reference test.
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