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user550103
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8
Show that the Huber-loss based optimization is equivalent to $\ell_1$ norm based.
Jun 20, 2018
6
Any known bounds for convex function say $f$ with $L$-Lipschitz continuous gradient: $( x - y)^T A \left( \nabla f(x) - \nabla f(y)\right)$?
May 7, 2020
6
Dual norm of a truncated and ordered (decreasing order) $\ell_1$-norm
Apr 21, 2018
6
Orthogonal Projection onto the Weighted $ {L}_{2} $ Norm Ball
Jan 19, 2019
6
Gradient of $x \mapsto \log \left( \det \left( \dfrac {3}{10}I+xx^{T}\right) \right) $
Aug 26, 2019
5
Derivative of a function of matrix
Apr 2, 2019
5
How to arrive at $ \frac{\partial }{\partial X} \log(\mathrm{det}(I + A X B^\top )) = A^\top (I +B X^\top A^\top )^{-1} B$?
Jun 16, 2018
5
Lipschitz constant of L2 reg. logistic regression $\sum_i \log \left(1 + \exp\left\{ -t_i \left(w^T x_i\right)\right\} \right) + \mu \|w \|_2^2$
Feb 11, 2019
5
Lagrangian: $\min_{\mathbf{X} \in \mathbb{R}^{N \times K}} \left\|\mathbf{Y}-\mathbf{X}\right\|_F^2$ s.t. $\mathbf{A}\mathbf{X} = \mathbf{B}$
Nov 23, 2018
4
Is it true that ${\rm Tr}((A^{1/2}BA^{1/2})^{1/2}) = {\rm Tr}((BA)^{1/2})$ for positive semidefinite matrices $A,B$?
Sep 1, 2020