Author

R. Zhang

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Preprint Oct 2026

Metric-Based Equilibrium Selection in Noncooperative Differentiable Games

Metric conditioning can change which equilibrium attracts learning dynamics without moving the equilibria of a differentiable game. We study how to use state-dependent symmetric positive-definite (SPD) metrics to select among known equilibria by keeping a designated equilibrium attracting while making a rival unstable....

Karan Mahesh, R. Zhang, Michael R. Benjamin et al. · 0 citations

#artificial intelligence Preprint Aug 2026

Denoising as Projection: Constrained Optimization with Gradient-Guided Diffusion

The proposed update incorporates the objective gradient inside the denoising step, yielding an inference-time method that uses only a pretrained denoiser and gradient evaluations and is analyzed as an inexact projected-gradient method for constrained optimization over learned feasible geometries.

R. Zhang, Jiawei Zhang, Gioele Zardini et al. · 0 citations

Preprint Aug 2026

CONTRAMEM: Learning Self-Evolving Procedural Memory from Contrasting Multi-Model Trajectories

Autonomous computer-use agents are increasingly applied to long-horizon tasks requiring coordinated application calls, persistent state tracking, and verifier-sensitive writes, yet they remain prone to procedural failures: misreading application state, tool semantics, or task progress. Procedural memory promises more c...

Zheyuan Deng, Bing-Hang Lu, Han-Qi Feng et al. · 0 citations