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New PICO method enhances LLM reasoning on complex problems

Researchers have introduced Policy-Compatible Reinforcement Learning (PICO), a novel method designed to improve the reasoning capabilities of large language models, particularly on complex problems. PICO addresses the limitations of existing Reinforcement Learning with Verifiable Rewards (RLVR) by performing distribution-constrained joint decoding. This approach guides token-level decoding with expert data while maintaining the student model's relative token probabilities and confining the sampling distribution. Experiments show that PICO consistently outperforms standard RLVR and other off-policy baselines across various reasoning datasets and agentic benchmarks. AI

IMPACT Enhances LLM reasoning on complex tasks by providing a more robust learning signal than existing RL methods.

RANK_REASON The cluster contains a research paper detailing a new method for improving LLM reasoning. [lever_c_demoted from research: ic=1 ai=1.0]

Read on arXiv cs.AI →

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New PICO method enhances LLM reasoning on complex problems

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The cluster contains a research paper detailing a new method for improving LLM reasoning. [lever_c_demoted from research: ic=1 ai=1.0]
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COVERAGE [1]

  1. arXiv cs.AI TIER_1 English(EN) · Zehao Wang, Hanzhu Chen, Runquan Gui, Zhe Wang, Lin Yang ·

    When All Rollouts Fail: Policy-Compatible Joint Decoding for Hard-Problem Reasoning

    arXiv:2610.36849v1 Announce Type: cross Abstract: Reinforcement Learning with Verifiable Rewards (RLVR) derives its learning signal from binary rewards via on-policy exploration and becomes a powerful paradigm for improving the reasoning of large language models. Yet it faces a l…