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Which of the following can be used to impute data sets based only on information in the training set?

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Which of the following can be used to impute data sets based only on information in the training set?

(a) postProcess

(b) preProcess

(c) process

(d) all of the mentioned

I have been asked this question in final exam.

My question is taken from caret in section Machine Learning of Data Science

1 Answer

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Best answer
The correct option is (b) preProcess

The best I can explain: This can be done with K-nearest neighbors.

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