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arXiv 2406.03993cs.CL
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从相关性改写视角评估大语言模型的零样本生成式摘要能力

Assessing LLMs for Zero-shot Abstractive Summarization Through the Lens of Relevance Paraphrasing

University of California, Davis(加利福尼亚大学戴维斯分校);University of South Florida(南佛罗里达大学)

Hadi Askari, Anshuman Chhabra, Muhao Chen, Prasant Mohapatra

AI总结:

本文提出相关性改写策略,通过识别并改写关键句子生成最小扰动数据集,评估4个数据集和4种不同规模LLM的零样本摘要鲁棒性,发现模型对扰动文章的摘要生成表现不一致,需进一步改进。

摘要:

大型语言模型(LLMs)在为给定文章生成零样本生成式摘要方面已达到最先进的性能。然而,关于这种零样本摘要过程的鲁棒性,人们知之甚少。为了弥补这一空白,我们提出了相关性改写(relevance paraphrasing),这是一种可用于衡量LLMs作为摘要生成器鲁棒性的简单策略。相关性改写方法首先识别对生成理想摘要贡献最大的最相关句子,然后对这些输入进行改写,从而获得一个最小扰动数据集。接着,通过在原始数据集和扰动数据集上评估模型的摘要生成性能,我们可以评估LLM在某一方面的鲁棒性。我们在4个多样化的数据集上进行了广泛的相关性改写实验,并使用了4个不同规模的LLM(GPT-3.5-Turbo、Llama-2-13B、Mistral-7B和Dolly-v2-7B)。我们的结果表明,LLMs对于最小扰动的文章并不是一致的摘要生成器,这需要进一步的改进。

英文摘要:

Large Language Models (LLMs) have achieved state-of-the-art performance at zero-shot generation of abstractive summaries for given articles. However, little is known about the robustness of such a process of zero-shot summarization. To bridge this gap, we propose relevance paraphrasing, a simple strategy that can be used to measure the robustness of LLMs as summarizers. The relevance paraphrasing approach identifies the most relevant sentences that contribute to generating an ideal summary, and then paraphrases these inputs to obtain a minimally perturbed dataset. Then, by evaluating model performance for summarization on both the original and perturbed datasets, we can assess the LLM's one aspect of robustness. We conduct extensive experiments with relevance paraphrasing on 4 diverse datasets, as well as 4 LLMs of different sizes (GPT-3.5-Turbo, Llama-2-13B, Mistral-7B, and Dolly-v2-7B). Our results indicate that LLMs are not consistent summarizers for the minimally perturbed articles, necessitating further improvements.

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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