检索模型训练方法、知识问答方法、装置、设备及介质

By combining a text embedding model and a large model computation module with a preset loss function to optimize the retrieval model, the problems of text relevance and downstream task adaptability in existing knowledge question answering systems are solved, thereby improving the accuracy of retrieval and question answering.

CN117290782BActive Publication Date: 2026-07-17HEFEI IFLY DIGITAL TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HEFEI IFLY DIGITAL TECH CO LTD
Filing Date
2023-09-21
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing knowledge-based question-answering systems, retrieval methods primarily focus on text relevance while neglecting the adaptability to downstream tasks, resulting in inaccurate answers and the inability to retrieve correct answers when user question descriptions are vague.

Method used

By using a text embedding model and a large model computation module, the similarity and answerability probability values ​​of the training data are obtained. The parameters of the retrieval model are adjusted using a preset loss function threshold. The question elements are analyzed in conjunction with the large model question parsing module to optimize the retrieval model and improve accuracy.

Benefits of technology

It improves the accuracy of the retrieval model and the accuracy of the question-answering system, solves the problems of text relevance and downstream task adaptability, and reduces the interference caused by vague user question descriptions.

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Abstract

本申请提供一种检索模型训练方法、知识问答方法、装置、设备及介质,该方法包括:获取训练数据,其包括给定问题、正样本和负样本;将训练数据输入到文本嵌入模型中,计算正样本与给定问题之间的第一相似度和负样本与给定问题之间的第二相似度;将训练数据输入到大模型计算模块中,得到正样本对应的第一可回答概率值和负样本对应的第二可回答概率值;基于预设的损失函数阈值控制给定问题与正样本之间的第一距离大于给定问题与负样本之间的第二距离以确定检索模型的参数。本申请有助于提高检索模型的准确性。
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