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20242026
most citedA Survey of Query Optimization in Large Language Models

3 citations · 4 across the 28 of their papers we have counts for

collaborators

33 papers

cs.CL2026

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

Qiyong Zhong, Mao Zheng, Mingyang Song +5

Multi-agent systems (MAS) split a task across specialized roles and are promising on complex tasks, yet a prevailing approach relies on inference-time orchestration alone. General-…

cs.CL2026

USA: Update-aware SAM for Cross-domain On-Policy Disitllation of Language Agents

Qiyong Zhong, Mao Zheng, Mingyang Song +6

On-policy distillation instils multi-turn agentic reasoning through dense token-level supervision on the student's own trajectories, but a single domain saturates early, so further…

cs.LG2026

RAZOR: Pruning Replaceable Experts in LLMs

Mingyang Song, Mao Zheng

Mixture-of-experts (MoE) models activate only a few experts per token but store the entire expert pool. Pruning this pool requires identifying experts whose removal preserves model…

cs.AI2026

Adversarial Closed-Loop Curriculum for Evolving Role-Playing Agents

Zheng Zhang, Liu Liu, Qi Chai +4

Role-playing agents based on large language models have been widely applied in areas such as personalized assistance and social simulation. Recent RL methods typically train on a f…

cs.CL2026

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

Jie Sun, Mao Zheng, Mingyang Song +8

Multi-teacher on-policy distillation allows a student to learn from complementary specialists on its own trajectories. Domain-routed approaches, however, select one teacher per exa…

cs.LG2026

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

Gengsheng Li, Mao Zheng, Mingyang Song +10

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…

cs.CL2026

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

Tao Liu, Taiqiang Wu, Mao Zheng +5

On-policy distillation (OPD) trains a student on its own rollouts with token-level supervision from teacher models, but its effectiveness can depend strongly on the warm-up stage b…

cs.IR2026

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

Guo Chen, Ziwen Li, Maolin Zheng +3

Retrieval-Augmented Generation (RAG) significantly enhances the ability of Large Language Models (LLMs) to provide accurate and contextually relevant answers by dynamically integra…

cs.CL2026

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

Jie Sun, Mao Zheng, Mingyang Song +7

Conventional language-model distillation often relies on fixed teacher-generated data, which may not cover the states encountered by an evolving student policy. On-policy distillat…

cs.LG2026

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

Gengsheng Li, Mao Zheng, Mingyang Song +8

Multi-turn agents that plan, invoke tools, and interact with environments offer a promising paradigm for solving complex tasks, yet their capabilities typically rely on very large…

cs.CL2026

Memory Beyond Recall: A Dual-Process Cognitive Memory System for Self-Evolving LLM Agents

Tianxiang Fei, Mingyang Song, Mao Zheng +1

Long-term memory for an LLM agent is more than retrieving the right passage at the right time. Current memory systems collapse belief revision, causal coupling, and cross-domain ab…

cs.CL2026

HardMTBench: Stress-Testing Chinese-English Translation on Knowledge-Intensive Domains

Zheng Li, Mao Zheng, Mingyang Song +1

General-purpose machine translation benchmarks such as FLORES-200 have reached a saturation regime on Chinese-English pairs, where modern large language models cluster within a nar…

cs.CL2026

IFMTBench: A Comprehensive Benchmark for Multilingual Translation Instruction Following

Mingrui Sun, Mao Zheng, Zheng Li +1

Modern translation workflows demand more than semantic equivalence. Users routinely require models to preserve JSON or HTML schemas, honor curated glossaries, disambiguate with pro…

cs.CL2026

SimCT: Recovering Lost Supervision for Cross-Tokenizer On-Policy Distillation

Jie Sun, Mao Zheng, Mingyang Song +6

On-policy distillation (OPD) is a standard tool for transferring teacher behavior to a smaller student, but it implicitly assumes that teacher and student predictions are comparabl…

cs.LG2026

Rubric-based On-policy Distillation

Junfeng Fang, Zhepei Hong, Mao Zheng +7

On-policy distillation (OPD) is a powerful paradigm for model alignment, yet its reliance on teacher logits restricts its application to white-box scenarios. We contend that struct…

cs.CL2026

SOD: Step-wise On-policy Distillation for Small Language Model Agents

Qiyong Zhong, Mao Zheng, Mingyang Song +5

Tool-integrated reasoning (TIR) is difficult to scale to small language models due to instability in long-horizon tool interactions and limited model capacity. While reinforcement…

cs.LG2026

Unifying Group-Relative and Self-Distillation Policy Optimization via Sample Routing

Gengsheng Li, Tianyu Yang, Junfeng Fang +6

Reinforcement learning with verifiable rewards (RLVR) has become a standard paradigm for post-training large language models. While Group Relative Policy Optimization (GRPO) is wid…

cs.CL2026

PRISM: Probability Reallocation with In-Span Masking for Knowledge-Sensitive Alignment

Chenning Xu, Mao Zheng, Mingyang Song

Supervised fine-tuning (SFT) with token-level hard labels can amplify overconfident imitation of factually unsupported targets, causing hallucinations that propagate in multi-sente…

cs.LG2026

A Survey of On-Policy Distillation for Large Language Models

Mingyang Song, Mao Zheng

On-Policy Distillation (OPD) trains large language models with teacher guidance on student-generated trajectories, addressing the mismatch between fixed demonstrations and the hist…

cs.CL2026

Model Merging in the Era of Large Language Models: Methods, Applications, and Future Directions

Mingyang Song, Mao Zheng

Model merging combines the parameters of multiple neural networks into a single model without additional training. As fine-tuned large language models (LLMs) proliferate, merging o…

cs.CL2026

Beyond the Illusion of Consensus: From Surface Heuristics to Knowledge-Grounded Evaluation in LLM-as-a-Judge

Mingyang Song, Mao Zheng, Chenning Xu

The paradigm of LLM-as-a-judge relies on a critical assumption, namely that high inter-evaluator agreement indicates reliable and objective evaluation. We present two complementary…

cs.CL2026

CodeDelegator: Mitigating Context Pollution via Role Separation in Code-as-Action Agents

Tianxiang Fei, Cheng Chen, Yue Pan +2

Recent advances in large language models (LLMs) allow agents to represent actions as executable code, offering greater expressivity than traditional tool-calling. However, real-wor…

cs.CL2026

PodBench: A Comprehensive Benchmark for Instruction-Aware Audio-Oriented Podcast Script Generation

Chenning Xu, Mao Zheng, Mingyu Zheng +1

Podcast script generation requires LLMs to synthesize structured, context-grounded dialogue from diverse inputs, yet systematic evaluation resources for this task remain limited. T…

cs.CL2025

Walk Before You Run! Concise LLM Reasoning via Reinforcement Learning

Mingyang Song, Mao Zheng

As test-time scaling becomes a pivotal research frontier in Large Language Models (LLMs) development, contemporary and advanced post-training methodologies increasingly focus on ex…