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Mao Zheng

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#natural language process... Preprint Oct 2026

Hy-Memory-30B-A3B: Attributed Reinforcement Learning for Long-Term Memory Writing

External-memory systems extend language-model applications beyond a context window, but their quality depends critically on the model executing the write path: deciding what to retain, how precisely to represent it, and how new evidence should update persistent state. Existing frameworks typically place a general-purpo...

Tian-Xiang Fei, Jia-Zheng Kang, Mao Zheng et al. · 0 citations
Preprint Sep 2026

Data-Free On-Policy Distillation: How Far Can We Go Without External Data?

On-policy distillation (OPD) is increasingly applied to frontier foundation model post-training. Prior work in this area has largely focused on algorithmic advances, yet it remains unclear how much OPD depends on its training questions and, in particular, how far this dependence can be reduced. Across two representativ...

Gengsheng Li, Mao Zheng, Ming-Yang Song et al. · 0 citations
#natural language process... Preprint Sep 2026

MAS-OPD: On-Policy Distillation for Multi-agent Systems

MAS-OPD is presented, where Role-Advantage Specialization defines the role advantage as the difference between the teacher signals under target and non-target role conditions, and Privileged Attribution for Coordination attributes an interaction conflict to its source and supplies it to the teacher alone as privileged...

Qi-Yong Zhong, Mao Zheng, Ming-Yang Song et al. · 0 citations
#machine learning Preprint Sep 2026

RAZOR: Pruning Replaceable Experts in LLMs

RAZOR, a training-free pruning method based on consensus residuals, the deviations of expert outputs from their original weighted mixture, gives the exact output change for a single deletion under survivor renormalization and router refill.

Ming-Yang Song, Mao Zheng · 0 citations

On-Policy Distillation with Curriculum Turn-level Guidance for Multi-turn Agents

Guided On-Policy Distillation (Guided-OPD), a simple yet effective algorithm that mixes teacher- and student-generated turns within each rollout and schedules the teacher's intervention probability along a curriculum that decays to zero is proposed.

Gengsheng Li, Mao Zheng, Ming-Yang Song et al. · 24 citations · ⚡3
#machine learning Preprint Sep 2026

Distill What You Trust: Reliability-Aware Multi-Teacher On-Policy Distillation

TrustMOPD replaces example-level teacher selection with label-free, token-level supervision allocation and closes the overall-score gap between the initial student and oracle-routed teachers when trained on single- and multi-teacher on-policy distillation.

Jie Sun, Mao Zheng, Ming-Yang Song et al. · 5 citations
#artificial intelligence Preprint Sep 2026

Data-free On-policy Distillation

DF-OPD matches and even surpasses real data, and the questions it produces track the teacher's own post-training data on three key diagnostics of training dynamics, which other real datasets do not.

Gengsheng Li, Mao Zheng, Ming-Yang Song et al. · 1 citation
Preprint Aug 2026

Simple-OPD: Demystifying Warm-up for On-policy Distillation

It is found that effective warm-up relies on teacher-compatible chain-of-thought supervision, and that even incorrect teacher rollouts can provide comparable benefits to correct ones, which suggests that warm-up primarily transfers a teacher-compatible thinking pattern rather than merely correct answers.

Tao Liu, Taiqiang Wu, Mao Zheng et al. · 3 citations · ⚡1
Jul 2026

NGM-RAG: Neural Graph Matching based Retrieval-Augmented Generation

NGM-RAG is introduced, a novel framework that leverages graph structures to effectively capture and utilize relational knowledge for improved retrieval and answer generation and proposes a neural graph matching approach that combines text-based matching with Graph Neural Networks (GNNs).

Guo Chen, Ziwen Li, Mao Zheng et al. · 0 citations
Jul 2026

EasyOPD: An Easy-to-use On-Policy Distillation Framework for Large Language Models

Experiments on reasoning, code-generation, scientific-knowledge, scientific-knowledge, and tool-use benchmarks show that these implementations can be executed through the same verl-based backend while retaining their method-specific objectives and task-dependent performance profiles.

Jie Sun, Mao Zheng, Mingyang Song et al. · 0 citations

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