2 papers
math.OC2026
Iteration Complexity of Frank-Wolfe and Its Variants for Bilevel Optimization
Anthony Palmieri, Francesco Rinaldi, Saverio Salzo +1
We study Frank-Wolfe (FW) methods for constrained bilevel optimization when the lower-level problem is solved only approximately, yielding biased and inexact hypergradients. We ana…
math.OC2025
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…