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arXiv 2602.02589cs.AIcs.LG
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PeerRank: 通过基于网络的、受偏见控制的同行评审实现自主LLM评估

Agents-as-Peers: Bias-Controlled LLM Evaluation as Multi-Agent Peer Assessment

Computer Science and Information, Ben-Gurion University of the Negev(本·加里翁大学(内盖夫)计算机科学与信息学院)

Yanki Margalit, Nurit Cohen-Inger, Erni Avram, Ran Taig, Seffi Cohen, Oded Margalit

AI总结:

PeerRank通过基于网络的、受偏见控制的同行评审实现自主LLM评估,产生稳定且具有区分性的排名,并揭示可测量的身份和呈现偏见。

摘要:

通常评估大型语言模型依赖于人类编写的基准、参考答案和人类或单个模型的判断,这些方法在扩展性差、迅速过时且无法匹配依赖网络检索和合成的开放世界部署方面存在不足。我们引入了PeerRank,一个完全自动的端到端评估框架,其中模型生成评估任务,使用基于实时网络的领域限定回答来回答这些问题,判断同行响应并汇总密集的同行评估以得到相对表现估计,无需人类监督或黄金参考。PeerRank将评估视为一个多代理过程,其中每个模型对称地参与任务设计、响应者和评估者角色,同时消除偏见判断。在一项覆盖12个商业可用模型和420个自主生成问题的大型研究中,PeerRank产生稳定且具有区分性的排名,并揭示可测量的身份和呈现偏见。排名是稳健的,且平均同行评分与Elo相符。我们进一步在TruthfulQA和GSM8K上验证PeerRank,其中同行评分与客观准确性相关。这些结果共同表明,具有选择性网络基础回答的偏见意识同行评估可以扩展开放世界LLM评估,超越静态和人类编纂的基准。

英文摘要:

Large language model (LLM) evaluation commonly relies on fixed human-authored benchmarks or centralized human/model judges. Fixed benchmarks can age and enter model training corpora, while centralized judges introduce their own scoring preferences. We cast LLM evaluation as a multi-agent peer-assessment problem and introduce Agents-as-Peers, a distributed evaluation protocol in which every agent generates tasks, answers the shared task set, and judges the answers of its peers, with no privileged evaluator. Self-ratings are excluded from the ranking, and judging is repeated under controlled identity and presentation regimes so that self bias, identity effects, presentation-position sensitivity, and judge severity are measured rather than left implicit. In an instantiation with 12 LLMs and 420 agent-generated questions, Agents-as-Peers aggregates 55,440 non-self peer judgments per regime. Most agents assign their own answers higher scores than those answers receive from peer judges; visible identity changes scores for some agents; the first fixed answer slot is associated with scores 0.39 points higher than the shuffled baseline; and judges differ markedly in severity. On labeled benchmarks, peer scores align strongly with accuracy on TruthfulQA (Pearson r=0.904) and GSM8K (r=0.873). On TruthfulQA, the peer-score correlation is substantially higher than the self-score correlation (r=0.538). A benchmark-overlap screen and item-level human audit further characterize the endogenous task set. These results support Agents-as-Peers as a cohort-relative measurement protocol whose ranking is reported together with the biases and rater effects that shape it. Code and dataset: https://github.com/caura-ai/caura-PeerRank

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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