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arXiv 2407.13702cs.CL
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ANHALTEN:德语词元级无参考幻觉检测的跨语言迁移

ANHALTEN: Cross-Lingual Transfer for German Token-Level Reference-Free Hallucination Detection

CAIDAS, University of Würzburg(维尔茨堡大学CAIDAS机构);NEC Laboratories Europe(欧洲NEC实验室);University of Mannheim(曼海姆大学)

Janek Herrlein, Chia-Chien Hung, Goran Glavaš

AI总结:

本文提出德语词元级无参考幻觉检测数据集ANHALTEN,并探索跨语言迁移方法,发现少样本迁移在多数设置下最有效,且更大上下文长度提升检测性能。

摘要:

关于词元级无参考幻觉检测的研究主要集中在英语上,这主要是因为其他语言中缺乏健壮的数据集。这阻碍了对跨语言迁移在这一重要自然语言处理应用中有效性的系统性研究。为弥补这一空白,我们引入了ANHALTEN,这是一个新的评估数据集,将英语幻觉检测数据集扩展到德语。据我们所知,这是首个探索词元级无参考幻觉检测的跨语言迁移的工作。ANHALTEN包含德语的金标准标注,这些标注与原始英语实例是平行的(即直接可比较)。我们基准测试了几种突出的跨语言迁移方法,证明在德语中,更大的上下文长度能带来更好的幻觉检测效果,即使没有后续上下文也是如此。重要的是,我们表明样本高效的少样本迁移在大多数设置中是最有效的方法。这突显了在目标语言中进行最少标注工作对无参考幻觉检测的实际益处。为了促进跨语言词元级无参考幻觉检测的未来研究,我们公开了ANHALTEN:https://github.com/janekh24/anhalten。

英文摘要:

Research on token-level reference-free hallucination detection has predominantly focused on English, primarily due to the scarcity of robust datasets in other languages. This has hindered systematic investigations into the effectiveness of cross-lingual transfer for this important NLP application. To address this gap, we introduce ANHALTEN, a new evaluation dataset that extends the English hallucination detection dataset to German. To the best of our knowledge, this is the first work that explores cross-lingual transfer for token-level reference-free hallucination detection. ANHALTEN contains gold annotations in German that are parallel (i.e., directly comparable to the original English instances). We benchmark several prominent cross-lingual transfer approaches, demonstrating that larger context length leads to better hallucination detection in German, even without succeeding context. Importantly, we show that the sample-efficient few-shot transfer is the most effective approach in most setups. This highlights the practical benefits of minimal annotation effort in the target language for reference-free hallucination detection. Aiming to catalyze future research on cross-lingual token-level reference-free hallucination detection, we make ANHALTEN publicly available: https://github.com/janekh24/anhalten

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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