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Q. |
Which of the following is a reasonable way to select the number of principal components "k"? |
A. | choose k to be the smallest value so that at least 99% of the varinace is retained. - answer |
B. | choose k to be 99% of m (k = 0.99*m, rounded to the nearest integer). |
C. | choose k to be the largest value so that 99% of the variance is retained. |
D. | use the elbow method |
Answer» A. choose k to be the smallest value so that at least 99% of the varinace is retained. - answer |
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