2448机器学习中等数值题medium
Held-Out Base Rate Implied by a Full-Sample Class Weight
题目
A training set has 100 labels with 30 positives. A class-weighting routine is mistakenly fit on all 125 labels and reports an overall positive rate of 0.36. What is the positive rate in the 25 held-out labels?
解题计时
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提交作答时记录，用于后续平均用时统计。
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