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New IAPO method improves LLM agent credit assignment in multi-turn tasks

Researchers have developed Influence-Aware Policy Optimization (IAPO), a new method for training large language model (LLM) agents that interact with users and tools over multiple turns. IAPO addresses the challenge of credit assignment by representing agent actions and observations as an influence-dependency graph, allowing for better redistribution of rewards based on how information and errors flow through a task. Experiments using Qwen3-4B and Qwen3-8B models on benchmarks like tau^2-Bench, UserBench, and AgentChangeBench showed that IAPO outperforms existing multi-turn reinforcement learning baselines without sacrificing function-calling capabilities. AI

IMPACT Enhances training efficiency for multi-turn LLM agents, potentially improving their performance in complex, interactive tasks.

RANK_REASON The cluster contains an academic paper detailing a new method for training LLM agents.

Read on Hugging Face Daily Papers →

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New IAPO method improves LLM agent credit assignment in multi-turn tasks

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The cluster contains an academic paper detailing a new method for training LLM agents.
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COVERAGE [2]

  1. arXiv cs.LG TIER_1 English(EN) · Bo Ren, Yirong Mao, Yi Yang, Wenhui Que ·

    IAPO: Influence-Aware Policy Optimization for Credit Assignment in Multi-Turn Service Agents

    arXiv:2608.24588v1 Announce Type: new Abstract: Large Language Model (LLM) agents increasingly solve long-horizon tasks through multi-turn interactions with users and external tools. In these settings, relevant task information often unfolds over time rather than being fully spec…

  2. Hugging Face Daily Papers TIER_1 English(EN) ·

    IAPO: Influence-Aware Policy Optimization for Credit Assignment in Multi-Turn Service Agents

    Large Language Model (LLM) agents increasingly solve long-horizon tasks through multi-turn interactions with users and external tools. In these settings, relevant task information often unfolds over time rather than being fully specified at the initial prompt. Service agents make…