COMPUTER SCIENCE AND ENGINEERING
MACHINE LEARNING
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]


Normalize the data


PCA


Normalize the data


None of the above

Detailed explanation1: 22. A correct way to preprocess the data When performing regression or classification is. Explanation: A correct way to preprocess the data When performing regression or classification is “Normalize the data → PCA → training”.
Detailed explanation2: Gaussian processes can also be used both for regression and classification.
Detailed explanation3: Knearest neighbors (kNN) is a supervised learning algorithm that can be used to solve both classification and regression tasks. The main idea behind kNN is that the value or class of a data point is determined by the data points around it.
Detailed explanation4: Which of the following is a reasonable way to select the number of principal components “k"? Choose k to be 99% of m (k = 0.99*m, rounded to the nearest integer). Choose k to be the largest value so that 99% of the variance is retained.