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AbsenceBench: Language models can't tell what's missing episode artwork

EPISODE · Jun 20, 2025

AbsenceBench: Language models can't tell what's missing

from 耳で聞くHacker News

大規模言語モデル(LLM)は、長い文章から特定の情報を見つけるのは得意だが、欠落した情報を特定するのは苦手であるという研究(AbsenceBench)。数値シーケンス、詩、GitHubのプルリクエストといったドメインで、LLMに意図的に削除された情報を特定させる実験を行った結果、最先端モデルでも性能が低いことが判明。Transformerの注意機構が、欠落に対応する特定のキーに注意を払うのが難しいことが原因だと分析している。

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AbsenceBench: Language models can't tell what's missing

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