(\qquad)Coordinate Descent Method (\qquad) (\qquad) (n)(f(X))(e_i) [S_i^{(k)} = e_i = (0, \dots, 1, \dots, 0)^T \quad (1 \text{ } i \text{ }) ] (e_1, e_2, \dots, e_n)(n)(k)\… [+7742 chars]
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