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arXiv 2401.04055cs.IR
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稀疏与密集的结合:一种增强科学文档检索的混合方法

Sparse Meets Dense: A Hybrid Approach to Enhance Scientific Document Retrieval

Priyanka Mandikal, Raymond Mooney

AI总结:

本文针对科学文档检索问题,提出结合传统稀疏词袋向量与基于大型语言模型的密集嵌入的混合检索方法,在囊性纤维化医学基准上实验证明该混合模型显著优于单一方法。

摘要:

传统信息检索基于文档和查询的稀疏词袋向量表示。较新的深度学习方法使用了基于transformer的大型语言模型学习的密集嵌入。我们表明,在囊性纤维化医学领域的科学文档检索经典基准上,这两种模型的性能大致相当。值得注意的是,来自最先进SPECTER2模型的密集向量并未显著提升性能。然而,我们提出的结合这些方法的混合模型产生了显著更好的结果,突显了在专业科学文档领域的信息检索中整合经典与当代深度学习技术的价值。

英文摘要:

Traditional information retrieval is based on sparse bag-of-words vector representations of documents and queries. More recent deep-learning approaches have used dense embeddings learned using a transformer-based large language model. We show that on a classic benchmark on scientific document retrieval in the medical domain of cystic fibrosis, that both of these models perform roughly equivalently. Notably, dense vectors from the state-of-the-art SPECTER2 model do not significantly enhance performance. However, a hybrid model that we propose combining these methods yields significantly better results, underscoring the merits of integrating classical and contemporary deep learning techniques in information retrieval in the domain of specialized scientific documents.

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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