Transient Amplification in Cascaded Gradient Methods: Exact Minimax Laws and Tracking without Resonance

2026-10-26来源 arXiv stat.MLEnglish
arXiv:2606.04031v3 Announce Type: replace-cross Abstract: Leader-follower gradient iterations, including bilevel and two-time-scale methods, can exhibit large finite-time excursions despite asymptotic stability. For cascaded iterations with block matrix J = [[A,0],[C,D]], symmetric diagonal blocks of norm at most gamma

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