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arXiv 2109.05979cs.CLcs.IR
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基于关键词抽取的会话式文档检索

Keyword Extraction for Improved Document Retrieval in Conversational Search

University of Amsterdam(阿姆斯特丹大学)

Oleg Borisov, Mohammad Aliannejadi, Fabio Crestani

摘要:

最近的研究表明,基于用户和计算机之间的交互来澄清和改进查询的混合主动会话搜索提供了巨大的优势。尽管如此,合并用户从对话中提供的附加信息提出了一些挑战。事实上,进一步的交互可能会使系统感到困惑,因为用户可能会使用与信息需求无关的词语,但在多轮对话的背景下,这些词语对于正确的句子构建至关重要。为此,在本文中,我们收集了两个会话关键字提取数据集,并提出了一个端到端的文档检索管道,将它们结合起来。此外,我们研究了两个神经关键词提取模型,即BERT和序列到序列,在提取精度和人类注释方面的性能。最后,我们研究了关键词提取对端到端神经IR性能的影响,并表明我们的方法击败了最先进的IR模型。我们公开这两个数据集,以促进这一领域的研究。

英文摘要:

Recent research has shown that mixed-initiative conversational search, based on the interaction between users and computers to clarify and improve a query, provides enormous advantages. Nonetheless, incorporating additional information provided by the user from the conversation poses some challenges. In fact, further interactions could confuse the system as a user might use words irrelevant to the information need but crucial for correct sentence construction in the context of multi-turn conversations. To this aim, in this paper, we have collected two conversational keyword extraction datasets and propose an end-to-end document retrieval pipeline incorporating them. Furthermore, we study the performance of two neural keyword extraction models, namely, BERT and sequence to sequence, in terms of extraction accuracy and human annotation. Finally, we study the effect of keyword extraction on the end-to-end neural IR performance and show that our approach beats state-of-the-art IR models. We make the two datasets publicly available to foster research in this area.

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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