activity
20242026
most citedCooper: Co-Optimizing Policy and Reward Models in Reinforcement Learning for Large Language Models

1 citations · 5 across the 31 of their papers we have counts for

collaborators

33 papers

cs.AI2026

KnowGPO: Knowledge-Grouped Policy Optimization for Search Agents

Siqi Chen, Zhengxi Lu, Yuchen Yan +10

Deep search agents solve knowledge-intensive tasks through long-horizon, multi-turn interactions, where assigning credit to individual search decisions is fundamentally difficult.…

cs.CL2026

PaperGym: Rubric-Centered Evolution for Research-Plan Generation

Yuhan Wang, Zhengxi Lu, Yuchen Yan +6

Research planning is the decisive capability of AI scientists. Yet a research plan admits no verifiable answer, so reinforcement learning lacks the environment it requires: tasks p…

cs.CL2026

Ring-Zero: Scaling Zero RL to a Trillion Parameters for Emergent Reasoning

Xinyu Tang, Qianggang Cao, Yurou Liu +13

Reinforcement learning with verifiable rewards without human-annotated data, often referred to as zero RL, has emerged as a powerful paradigm for eliciting chain-of-thought reasoni…

cs.CL2026

Milestone-Guided Policy Learning for Long-Horizon Language Agents

Zixuan Wang, Yuchen Yan, Hongxing Li +7

While long-horizon agentic tasks require language agents to perform dozens of sequential decisions, training such agents with reinforcement learning remains challenging. We identif…

cs.CL2026

Pause or Fabricate? Training Language Models for Grounded Reasoning

Yiwen Qiu, Linjuan Wu, Yizhou Liu +9

Large language models have achieved remarkable progress on complex reasoning tasks. However, they often implicitly fabricate information when inputs are incomplete, producing confi…

cs.AI2026

KnowU-Bench: Towards Interactive, Proactive, and Personalized Mobile Agent Evaluation

Tongbo Chen, Zhengxi Lu, Zhan Xu +13

Personalized mobile agents that infer user preferences and calibrate proactive assistance hold great promise as everyday digital assistants, yet existing benchmarks fail to capture…

cs.CL2026

CoVerRL: Breaking the Consensus Trap in Label-Free Reasoning via Generator-Verifier Co-Evolution

Teng Pan, Yuchen Yan, Zixuan Wang +6

Label-free reinforcement learning enables large language models to improve reasoning capabilities without ground-truth supervision, typically by treating majority-voted answers as…

cs.CL2026

Code-A1: Adversarial Evolving of Code LLM and Test LLM via Reinforcement Learning

Aozhe Wang, Yuchen Yan, Nan Zhou +5

Reinforcement learning for code generation relies on verifiable rewards from unit test pass rates. Yet high-quality test suites are scarce, existing datasets offer limited coverage…

cs.CL2026

InftyThink+: Effective and Efficient Infinite-Horizon Reasoning via Reinforcement Learning

Yuchen Yan, Liang Jiang, Jin Jiang +7

Large reasoning models achieve strong performance by scaling inference-time chain-of-thought, but this paradigm suffers from quadratic cost, context length limits, and degraded rea…

cs.CL2025

Every Step Evolves: Scaling Reinforcement Learning for Trillion-Scale Thinking Model

Ling Team, Anqi Shen, Baihui Li +101

We present Ring-1T, the first open-source, state-of-the-art thinking model with a trillion-scale parameter. It features 1 trillion total parameters and activates approximately 50 b…

cs.CV2025

SpatialLadder: Progressive Training for Spatial Reasoning in Vision-Language Models

Hongxing Li, Dingming Li, Zixuan Wang +7

Spatial reasoning remains a fundamental challenge for Vision-Language Models (VLMs), with current approaches struggling to achieve robust performance despite recent advances. We id…

cs.CL2025

EasySteer: A Unified Framework for High-Performance and Extensible LLM Steering

Haolei Xu, Xinyu Mei, Yuchen Yan +5

Large language model (LLM) steering has emerged as a promising paradigm for controlling model behavior at inference time through targeted manipulation of hidden states, offering a…

cs.CV2025★ 1 cited

GSM8K-V: Can Vision Language Models Solve Grade School Math Word Problems in Visual Contexts

Fan Yuan, Yuchen Yan, Yifan Jiang +9

Mathematical reasoning is a key capability for vision-language models (VLMs), yet current benchmarks mainly evaluate text-based or explicitly symbolic visual inputs. It remains unc…

cs.AI2025

LAPO: Internalizing Reasoning Efficiency via Length-Adaptive Policy Optimization

Xingyu Wu, Yuchen Yan, Shangke Lyu +7

Large reasoning models have achieved remarkable performance through extended chain-of-thought sequences, yet this computational freedom leads to excessive token generation even for…

cs.CL2025★ 1 cited

Cooper: Co-Optimizing Policy and Reward Models in Reinforcement Learning for Large Language Models

Haitao Hong, Yuchen Yan, Xingyu Wu +5

Large language models (LLMs) have demonstrated remarkable performance in reasoning tasks, where reinforcement learning (RL) serves as a key algorithm for enhancing their reasoning…

cs.AI2025

Hierarchical Budget Policy Optimization for Adaptive Reasoning

Shangke Lyu, Linjuan Wu, Yuchen Yan +7

Large reasoning models achieve remarkable performance through extensive chain-of-thought generation, yet they suffer from a critical inefficiency: applying uniformly extensive reas…

cs.CV2025

Test-Time Reinforcement Learning for GUI Grounding via Region Consistency

Yong Du, Yuchen Yan, Fei Tang +5

Graphical User Interface (GUI) grounding, the task of mapping natural language instructions to precise screen coordinates, is fundamental to autonomous GUI agents. While existing m…

cs.CL2025

GroundAct: Can LLM Agents Ground Actions in Environmental States?

Zixuan Wang, Dingming Li, Hongxing Li +8

LLM agents achieve 85-96% success on tasks where instructions fully specify the action, but drop to 29-53% when action feasibility depends on environmental state that the instructi…

cs.CV2025

SVGenius: Benchmarking LLMs in SVG Understanding, Editing and Generation

Siqi Chen, Xinyu Dong, Haolei Xu +10

Large Language Models (LLMs) and Multimodal LLMs have shown promising capabilities for SVG processing, yet existing benchmarks suffer from limited real-world coverage, lack of comp…

cs.CL2025

Double-Checker: Enhancing Reasoning of Slow-Thinking LLMs via Self-Critical Fine-Tuning

Xin Xu, Tianhao Chen, Fan Zhang +11

While slow-thinking large language models (LLMs) exhibit reflection-like reasoning, commonly referred to as the "aha moment:, their ability to generate informative critiques and re…

cs.CL2025

Do Large Language Models Excel in Complex Logical Reasoning with Formal Language?

Jin Jiang, Jianing Wang, Yuchen Yan +5

Large Language Models (LLMs) have been shown to achieve breakthrough performance on complex logical reasoning tasks. Nevertheless, most existing research focuses on employing forma…

cs.CV2025

ViewSpatial-Bench: Evaluating Multi-perspective Spatial Localization in Vision-Language Models

Dingming Li, Hongxing Li, Zixuan Wang +9

Vision-language models (VLMs) have demonstrated remarkable capabilities in understanding and reasoning about visual content, but significant challenges persist in tasks requiring c…

cs.CL2025

VerifyBench: Benchmarking Reference-based Reward Systems for Large Language Models

Yuchen Yan, Jin Jiang, Zhenbang Ren +9

Large reasoning models such as OpenAI o1 and DeepSeek-R1 have demonstrated remarkable performance in complex reasoning tasks. A critical component of their training is the incorpor…

cs.CL2025

Let LRMs Break Free from Overthinking via Self-Braking Tuning

Haoran Zhao, Yuchen Yan, Yongliang Shen +7

Large reasoning models (LRMs), such as OpenAI o1 and DeepSeek-R1, have significantly enhanced their reasoning capabilities by generating longer chains of thought, demonstrating out…