The most popularly used dimensionality reduction algorithm is Principa – McqOptions

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1.	The most popularly used dimensionality reduction algorithm is Principal Component Analysis (PCA). Which of the following is/are true about PCA? 1. PCA is an unsupervised method2. It searches for the directions that data have the largest variance3. Maximum number of principal components
A.	1 & 2
B.	2 & 3
C.	3 & 4
D.	all of the above
Answer» E.

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