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Kianoosh Vadaei

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#artificial intelligence Preprint Oct 2026

How Much Do $\ell_1$ Attacks Need Concentrated Perturbations?

P perturbation concentration is established as a complementary, model- and attack-dependent axis of $\ell_1$ attack evaluation, and direct in-loop constrained optimization preserves up to $88$ percentage points more attack success than post-hoc clipping, highlighting the importance of constraint enforcement.

M. Shirian, Kianoosh Vadaei, Arshia Hemmat · 0 citations
#artificial intelligence Preprint Oct 2026

Don't Waste the Noise: Importance-Guided Perturbation Allocation under Joint Global and Local Constraints

Adversarial optimization under a shared $\ell_1$ budget requires deciding not only how much perturbation to use, but also where that limited budget should be spent. This allocation problem becomes particularly important when individual input coordinates are subject to local magnitude constraints, which restrict the ext...

M. Shirian, Kianoosh Vadaei · 0 citations

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