26 citations · 69 across the 17 of their papers we have counts for
3 papers · 2 filters
Probabilistic Iterative Hard Thresholding for Sparse Learning
Matteo Bergamaschi, Andrea Cristofari, Vyacheslav Kungurtsev +1
For statistical modeling wherein the data regime is unfavorable in terms of dimensionality relative to the sample size, finding hidden sparsity in the ground truth can be critical…
Block cubic Newton with greedy selection
Andrea Cristofari
A second-order block coordinate descent method is proposed for the unconstrained minimization of an objective function with a Lipschitz continuous Hessian. At each iteration, a blo…
Complexity results and active-set identification of a derivative-free method for bound-constrained problems
Andrea Brilli, Andrea Cristofari, Giampaolo Liuzzi +1
In this paper, we analyze a derivative-free line search method designed for bound-constrained problems. Our analysis demonstrates that this method exhibits a worst-case complexity…