Siqi Luo

activity

20242026

most citedParameter-Efficient Fine-Tuning for Pre-Trained Vision Models: A Survey and Benchmark

16 citations · 16 across the 10 of their papers we have counts for

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cs.AI2026

A First-Principles Derivation of LLM Policy Optimization: From Expected Reward to GRPO and Its Structural Extensions

Jianghan Shen, Siqi Luo, Yue Li +9

Policy gradient algorithms for language models optimize the same objective $J (θ) = E * τ \sim p * θ (τ) [R (τ)]$ , which has exactly two factors: the trajectory probability $p_θ(…

cs.AI2026

Sketch Then Paint: Hierarchical Reinforcement Learning for Diffusion Multi-Modal Large Language Models

Siqi Luo, Jianghan Shen, Yi Xin +9

Diffusion Multi-Modal Large Language Models (dMLLMs) are powerful for image generation, but optimizing them through reinforcement learning (RL) remains a major challenge. One prima…