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Ziheng Chen

2 papers indexed

arxivstat.MLcs.LGmath.OC2026-07-21

RELTA-SGLD: Relative-Growth Localized Taming for Nonconvex Stochastic-Gradient Langevin Learning

Yiwei Zhou, Ziheng Chen

We introduce RELTA-SGLD, a taming scheme that stabilizes superlinear stochastic-gradient updates while reducing unnecessary suppression of the original learning drift. A threshold determines where the taming turns on, while a relative-growth principle derived from the one-step Ly…

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arxivcs.CV2026-06-30

No Place to Hide: Benchmarking Video Hallucination with Background-Controlled Pairs

Haojian Huang, Harold Haodong Chen, Meng Luo, Junjia Du, Shanqing Xu, Ziheng Chen, et al.

We introduce VidPair-Halluc, a new benchmark for evaluating video hallucination in large video models (LVMs) under rigorous and controlled conditions. Unlike previous benchmarks that primarily rely on text-based perturbations or adversarial questions while neglecting the consiste…

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