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Zhongbin Guo

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#machine learning Preprint Feb 2026

Patch the Distribution Mismatch: RL Rewriting Agent for Stable Off-Policy SFT

This work forms data rewriting as a policy-learning problem and trains a lightweight LoRA rewriting policy with reinforcement learning that optimizes question-answering-style distributional alignment and semantic diversity under a hard task-consistency gate, producing verified supervision for downstream SFT.

Jia-Cheng Wang, Zhi-Jie Liu, Ping Jian et al. · 0 citations

The Struggle Between Continuation and Refusal: A Mechanistic Analysis of the Continuation-Triggered Jailbreak in LLMs

This work focuses on a continuation-triggered jailbreak phenomenon, whereby simply relocating a continuation-triggered instruction suffix can substantially increase jailbreak success rates and proposes Head Competition Steering (HCS), a mechanistically grounded inference-time strategy that explicitly leverages the comp...

Yong Deng, Zhen Yang, Ping Jian et al. · 1 citation
Preprint Aug 2026

Generation as Auxiliary Supervision: Enhancing Visual Understanding at Zero Inference Overhead via Decoupled Embedding Prediction

GAS is presented, a generation-guided training framework that reinterprets visual generation as auxiliary supervision for representation learning and improves aggregate multimodal understanding, with its most reliable gains on perception and spatial comprehension.

Zhongbin Guo, Jiahao Xie, Dongling Xiao et al. · 1 citation
Jul 2026

DecoupleMix: Decoupled Ratio Search and Convex Allocation for Scalable VLM Data Recipes

The DecoupleMix framework delivers two critical capabilities: guiding what data to collect next and rendering dataset validation a controlled, attributable experiment, and is competitive with strong open-source models trained with substantially larger multimodal budgets.

Jiahao Xie, Zhongbin Guo, Qianle Wang et al. · 0 citations
Preprint Aug 2026

PRISM: Priority-aware Rubric Internalization via Structured Multimodal Data Synthesis

This work proposes PRISM, a four-stage data synthesis framework that produces persona--task pairs, prefix-guided rule sets, quality-filtered rubrics, and structured verification traces, and introduces PRISM-Eval, whose Loose and Strict metrics use deterministic matching against fixed labels and therefore require no inf...

Xiaomin He, Dongling Xiao, Jiahao Xie et al. · 0 citations

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