FoundationMultiple choice
Keeping the big singular values · Part 1 of 3
A centred data matrix has singular values 5, 3 and 1, and no others. You want a low-rank summary of it.
What is , the sum of the squares of all the entries of ?
- A9, the sum of the singular values
- B35
- C√35, about 5.9, the Frobenius norm of the matrix
- D25, the square of the largest singular value alone
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