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Hao Zhang

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#natural language process... Preprint Oct 2026

LoGRA: Scaling LLM Reinforcement Learning with Low-Rank Gradient Sketches

Reinforcement learning has greatly advanced the capabilities of large language models, but its memory demands remain a barrier to broader adoption. We introduce LoGRA, an approach to RL post-training that reduces memory by retaining useful learning signals in low-rank gradient sketches. These compact representations su...

Shao-Kun Zhang, Yi-Fan Zhang, Jian Hu et al. · 0 citations

RW-TTT: Batched Serving for Request-Owned Test-Time Training State

Test-time training is formulated as read-write TTT serving and present RW-TTT, which tags each decode step with its owner, version, and READ/WRITE effect, batches only compatible phases, and commits updates only to the owner.

Jian Yang, Zhizhuo Kou, Yao-Hua Tian et al. · 0 citations
#machine learning Preprint Jul 2026

Molt: A Scalable PyTorch-Native Training Framework for Agentic Reinforcement Learning

Molt is a PyTorch-native training framework built to keep that cost small: a codebase compact and clean enough for a researcher to hold in their head, and for an AI coding assistant to read and reason about in its entirety, so the algorithm flow can be traced and changed end to end.

Jian Hu, Huiying Li, Hao Zhang et al. · 0 citations
Preprint Aug 2026

PhyAI: Real-Time Physical AI at the Edge, Scalable Rollouts in the Cloud

PhyAI, a Physical AI inference engine with a single runtime that keeps architecture-specific conditioning, solver, cache, and output logic in model adapters while sharing graph execution, kernels, memory management, and parallel services, is built.

Cheng-Hua Wang, Daliang Xu, Dongqi Cai et al. · 1 citation

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