AI RESEARCH
FANoS-v2: Feedback-Controlled Momentum with Thermostat Damping for Lightweight Neural Optimization
arXiv CS.LG
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ArXi:2601.00889v2 Announce Type: replace \FANOS{} is a PyTorch optimizer that augments RMS-preconditioned momentum with a scalar feedback controller over update energy. The public reference implementation s momentum in parameter-update units, applies a non-negative thermostat damping coefficient, s diagonal, factored, and raw-gradient preconditioning, and exposes diagnostics intended for stability audits.