When performing regression or classification, which of the following is the correct way to preprocess the data?

Machine Learning - Quiz(MCQ)

Normalize the data -> PCA -> training

PCA -> normalize PCA output -> training

Normalize the data -> PCA -> normalize PCA output -> training

All of the above

Correct Answer : Normalize the data -> PCA -> training

Explanation : You need to always normalize the data first. If not, PCA or other techniques that are used to reduce dimensions will give different results.

Recently Updated in Machine Learning Questions

Machine Learning has various function representation, which of the following is not numerical functions?

Case-based

Neural Network

Linear Regression

Support Vector Machines

Correct Answer : Case-based

The prior goal of unsupervised learning model is to determine the ________ .

Discuss

Regression task

Data patterns

Classification task

Correct Answer : Data patterns

Which of the following will be true about k in K-Nearest Neighbor in terms of Bias?

When you decrease the k the bias will be increases

When you increase the k the bias will be increases

Both (A) and (B)

None of the Above

Correct Answer : When you increase the k the bias will be increases

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