4177机器学习简单数值题short
One-Hot Plus Interaction Column Count
题目
A categorical variable has 5 levels. You one-hot encode it with a dropped baseline, keep one raw numeric feature x, and also create all interactions between x and the retained dummies. How many columns come out of this block in total?
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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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