Ao Li

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2024

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基于ChatGPT查询改写的文档检索方法(Document Retrieval Method Based on ChatGPT Query Rewriting)
Ao Li (李澳) | Xinhui Tu (涂新辉) | Yinghao Xiong (熊英豪)
Proceedings of the 23rd Chinese National Conference on Computational Linguistics (Volume 1: Main Conference)

“查询改写是一种通过优化查询从而提高检索结果质量的技术。传统的基于伪相关反馈的方法受限于伪相关文档的质量。本文提出了一种基于ChatGPT查询改写的文档检索方法。这种方法不依赖伪相关文档,可以避免伪相关文档质量不高的问题。首先,利用BM25模型进行检索,获得初次检索结果集;同时借助ChatGPT生成新查询;然后分别将原始查询和新查询作为输入,利用重排模型对初次检索结果集进行重排,得到各自的文档相关性得分;最后,将两个查询的文档相关性得分进行融合,得到最终的文档得分。在多个检索测试集上的实验结果表明,相比于基准模型,基于ChatGPT查询改写的文档检索方法在nDCG@10指标上平均提升了约4.5个百分点。”