题目
题目

COS10022 Lecture 4_Knowledge Check

多项选择题

Which of the following is TRUE about cross validation?

选项
A.It is used to judge how the trained model performs outside the sample on test data.
B.It is used to find the best predictive model.
C.It is used to avoid over-fitting.
D.It is used to evaluate the predictive performance of a model.
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标准答案
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思路分析
When evaluating cross-validation, we need to look at what it is and what it accomplishes in model assessment. Option 1: 'It is used to judge how the trained model performs outside the sample on test data.' This is true in spirit: cross-validation provides an estimate of how a model will generalize to unseen data by ......Login to view full explanation

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