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arXiv 2507.13105cs.CLcs.IRcs.LG

SemCSE:利用大语言模型生成摘要的科学摘要语义对比句嵌入

SemCSE: Semantic Contrastive Sentence Embeddings Using LLM-Generated Summaries For Scientific Abstracts

Bielefeld University, Germany(比勒菲尔德大学)

Marc Brinner, Sina Zarriess

AI总结:

SemCSE 利用大语言模型生成的摘要进行无监督对比学习,以增强科学文本语义嵌入,并在 SciRepEval 基准上取得同等规模模型中的最优性能。

摘要:

我们提出 SemCSE,一种用于学习科学文本语义嵌入的无监督方法。基于文本嵌入对比学习的最新进展,我们的方法利用大语言模型为科学摘要生成的摘要来训练模型,使语义相关的摘要在嵌入空间中彼此更接近。由此产生的目标确保模型捕获文本的真实语义内容,这与传统的基于引用的方法形成对比,后者不一定反映语义相似性。为了验证这一点,我们提出了一个新的基准,旨在评估模型理解和编码科学文本语义内容的能力,证明我们的方法在嵌入空间中实现了更强的语义分离。此外,我们在用于科学文本嵌入的综合基准 SciRepEval 上评估 SemCSE,在同等规模的模型中取得了最先进的性能,从而突显了以语义为重点的训练方法的优势。

英文摘要:

We introduce SemCSE, an unsupervised method for learning semantic embeddings of scientific texts. Building on recent advances in contrastive learning for text embeddings, our approach leverages LLM-generated summaries of scientific abstracts to train a model that positions semantically related summaries closer together in the embedding space. This resulting objective ensures that the model captures the true semantic content of a text, in contrast to traditional citation-based approaches that do not necessarily reflect semantic similarity. To validate this, we propose a novel benchmark designed to assess a model's ability to understand and encode the semantic content of scientific texts, demonstrating that our method enforces a stronger semantic separation within the embedding space. Additionally, we evaluate SemCSE on the comprehensive SciRepEval benchmark for scientific text embeddings, where it achieves state-of-the-art performance among models of its size, thus highlighting the benefits of a semantically focused training approach.

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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