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

1 citations · 3 across the 43 of their papers we have counts for

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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.AI2026

Agent-G: Gaussian Guidance for Agentic Reinforcement Learning

Zixuan Wang, Yanrui Miao, Zhengxi Lu +6

Hint-based reinforcement learning addresses reward sparsity in long-horizon agentic tasks by retaining a prefix of an expert trajectory before each rollout, letting the policy expl…

cs.AI2026

AgentOPSD: Recursive Self-Distillation for Agentic Reinforcement Learning

Zi-Han Wang, Zhengxi Lu, Zhiyuan Yao +10

Reinforcement learning (RL) with verifiable rewards constructs trajectory-level advantage estimates, yet it often fails to credit the few pivotal decisions that determine outcomes…

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.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.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…