activity
20242026
most citedYour Group-Relative Advantage Is Biased

1 citations · 4 across the 43 of their papers we have counts for

collaborators

47 papers

cs.AI2026

Reels-RSI: Program-Level Self-Improvement for Code-Rendered Explainer Videos

Wei Lin

Explainer videos -- a worked geometry problem, why the sky is blue, how a dynasty fell -- are usually one more target for pixel video generation. We argue they are a different kind…

cs.LG2026

On-Policy Parameter Update Direction Underlies Generalization in LLM Post-Training

Shufan Shen, Zhongni Hou, Junshu Sun +5

The strong generalization performance of on-policy post-training paradigms has motivated studies of their parameter update behaviors. However, these studies treat the observed beha…

cs.AI2026

SAKI: Maximal-Coupling-Routed Teacher Supervision for On-Policy Distillation

Miteto Wei, Xiaohan Wang, Zehao Chen +7

On-policy distillation (OPD) reduces train-test state mismatch by training a student on its own generated trajectories, but weak students may visit teacher-misaligned prefixes wher…

cs.LG2026

TGRL: Temperature-Grouped Reinforcement Learning for Efficient Exploration in LLMs

Zihan Lin, Xiaohan Wang, Jie Cao +4

Efficient exploration often remains a central bottleneck in reinforcement learning with verifiable rewards (RLVR). Although temperature control and test-time scaling strategies can…

cs.SE2026

Tool Retrievers Are Underestimated: Annotation Expansion Reveals True Capability

Yanyu Zhu, Chenheng Zhang, Shaoshen Chen +8

In open-world scenarios with massive and evolving tool repositories, tool-augmented large language models rely on a retriever to surface relevant tools for a given query. Because s…

cs.LG2026

One Step, One Lead: Mitigating Higher-Order Interference in Multi-Domain Reinforcement Learning via Cross-Step Control

Zihan Lin, Xiaohan Wang, Jie Cao +4

Reinforcement learning (RL) across multiple domains can broaden the reasoning capabilities of large language models (LLMs), yet joint training often degrades individual-domain perf…

cs.CL2026

HiDiffTIR: Hierarchical Difficulty-Aware Policy Optimization for Multi-Turn Tool-Integrated Reasoning

Yucan Guo, Xiaohan Wang, Miao Su +8

Tool-Integrated Reasoning (TIR) is a fundamental capability for LLM agents to solve complex tasks by interacting with external tools iteratively. Reinforcement Learning (RL) has be…

cs.AI2026

ATLAS: Dual-Horizon Diagnostic Evaluation for Industrial Tool-Use Agents

Wei Chen, Peilun Zhou, Zhaoyu Hu +8

Large language model (LLM) agents are increasingly deployed in user-facing services that require iterative tool use under dynamic business conditions. Reliable evaluation is essent…

cs.CL2026

Behavior2Trip: Towards Personalized Travel Planning via User Behavior Trajectory

Zihao Cheng, Yingyu Shan, Hongru Wang +6

Travel planning agents assist users in generating personalized travel plans by modeling their individual preferences. Existing agents either rely on explicit user instructions or e…

cs.CL2026

When Not to Imitate: Boundary-Aware Skill Memory for Reliable Tool-Use LLM Agents

Zihan Lin, Zhenyu Chen, Jiawen Wei +6

Extracting skills from past successes is critical for the efficient evolution of Large Language Model (LLM) agents. Prevailing agent self-evolution paradigms typically rely on a co…

cs.LG2026

Toward Plasticity-Preserving KL Regularization for Capability Retention in LLM Reinforcement Learning

Li Wang, Xiaodong Lu, Xiaohan Wang +4

Reinforcement learning (RL) has become a central paradigm for large language model (LLM) post-training, but optimization toward new objectives can degrade capabilities already pres…

cs.CL2026

UniMem: Complementary Episodic-to-Parametric Memory for Boundary-Agnostic Task Streams

Siyu Xia, Chenheng Zhang, Yanting Wu +8

Memory is essential for LLM agents to accumulate task experience and reuse task-specific execution strategies. However, real-world deployment over boundary-agnostic and evolving ta…

cs.LG2026

Learning from Own Solutions: Self-Conditioned Credit Assignment for Reinforcement Learning with Verifiable Rewards

Yingyu Shan, Yuhang Guo, Zihao Cheng +7

Reinforcement learning with verifiable rewards (RLVR) has driven substantial progress in training LLMs for reasoning tasks, but representative methods such as GRPO assign uniform c…

cs.CL2026

Are Full Rollouts Necessary for On-Policy Distillation?

Yaocheng Zhang, Jiajun Chai, Yuqian Fu +7

On-policy distillation (OPD) provides dense teacher feedback along student-generated rollouts rather than fixed teacher traces and has emerged as a promising post-training paradigm…

cs.LG2026

-Play: Multi-Agent Self-Play via Privileged Self-Distillation without External Data

Yaocheng Zhang, Yuanheng Zhu, Wenyue Chong +7

Deep search agents have emerged as a promising paradigm for addressing complex information-seeking tasks, but their training remains challenging due to sparse rewards, weak credit…

cs.CL2026

Terminal-World: Scaling Terminal-Agent Environments via Agent Skills

Zihao Cheng, Hongru Wang, Zeming Liu +6

Terminal agents extend Large Language Models with the ability to execute tasks directly in command-line environments, but their progress is bottlenecked by the scarcity of high-qua…

cs.AI2026

AMR-SD: Asymmetric Meta-Reflective Self-Distillation for Token-Level Credit Assignment

Zhenlin Wei, Pu Jian, Yingzhuo Deng +6

The alignment of Large Language Models (LLMs) for complex reasoning heavily relies on Reinforcement Learning with Verifiable Rewards (RLVR). However, standard algorithms like GRPO…

cs.CL2026

Implicit Hierarchical GRPO: Decoupling Tool Invocation from Execution for Tool-Integrated Mathematical Reasoning

Li Wang, Xiaohan Wang, Xiaodong Lu +5

Large language models (LLMs) have increasingly leveraged tool invocation to enhance their reasoning capabilities. However, existing approaches typically tightly couple tool invocat…

cs.IR2026

RecRM-Bench: Benchmarking Multidimensional Reward Modeling for Agentic Recommender Systems

Wenwen Zeng, Jinhui Zhang, Hao Chen +10

The integration of Large Language Model (LLM) agents is transforming recommender systems from simple query-item matching towards deeply personalized and interactive recommendations…

cs.DC2026

Accelerating Compound LLM Training Workloads with Maestro

Xiulong Yuan, Hongqing Chen, Jiaxuan Peng +16

Compound LLM training workloads-such as knowledge distillation and multimodal LLM (MLLM) training-are gaining prominence. These typically comprise heterogeneous components differin…

cs.AI2026

SPREG: Structured Plan Repair with Entropy-Guided Test-Time Intervention for Large Language Model Reasoning

Xuan Wang, Yu Ming, Xinhao Zhong +4

Large Language Models (LLMs) are prone to logical hallucinations and stochastic drifts during long-chain reasoning. While Classifier-Free Guidance (CFG) can improve instruction adh…

cs.AI2026

AutoSearch: Adaptive Search Depth for Efficient Agentic RAG via Reinforcement Learning

Jingbo Sun, Wenyue Chong, Songjun Tu +7

Agentic retrieval-augmented generation (RAG) systems enable large language models (LLMs) to solve complex tasks through multi-step interaction with external retrieval tools. Howeve…

cs.CL2026

MemEvolve: Towards Self-Evolving Agents via Co-Evolutionary Capability Expansion and Experience Distillation

Zihao Cheng, Zeming Liu, Yingyu Shan +7

While large language model--powered agents can self-evolve by accumulating experience or by dynamically creating new assets (i.e., tools or expert agents), existing frameworks typi…

cs.CV2026

DiningBench: A Hierarchical Multi-view Benchmark for Perception and Reasoning in the Dietary Domain

Song Jin, Juntian Zhang, Xun Zhang +6

Recent advancements in Vision-Language Models (VLMs) have revolutionized general visual understanding. However, their application in the food domain remains constrained by benchmar…