f-KGQA: A fuzzy question answering system for knowledge graphs

IF 3.2 1区数学 Q2 COMPUTER SCIENCE, THEORY & METHODS Fuzzy Sets and Systems Pub Date : 2024-08-30 DOI:10.1016/j.fss.2024.109117

Ruizhe Ma , Yunxing Liu , Zongmin Ma

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Abstract

The wide usage of large-scale knowledge graphs (KGs) motivates the development of user-friendly interfaces so that knowledge graphs become more readily accessible to a larger population. Natural language-based question answering (QA) systems are widely investigated and developed in the context of KGs, which can provide users with a natural means to retrieve the information they need from KGs without expecting them to know the query language. It is very common that natural language contains linguistic terms (fuzzy terms), and fuzzy (flexible) query has been widely investigated in the context of databases. This paper contributes a QA system with fuzzy terms over KGs called f-KGQA. f-KGQA can deal with different types of questions, including simple questions, complex questions, and questions with fuzzy terms. More importantly, users are provided with a channel to flexibly define their fuzzy terms based on their understanding. Our experimental results demonstrate the effectiveness and applicability of f-KGQA in handling questions with fuzzy terms.

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f-KGQA：知识图谱模糊问题解答系统

大规模知识图谱（KGs）的广泛使用促使人们开发用户友好型界面，从而使更多的人更容易访问知识图谱。基于自然语言的问题解答（QA）系统在知识图谱中得到了广泛的研究和开发，它可以为用户提供一种自然的手段，让他们从知识图谱中检索到所需的信息，而不需要他们懂得查询语言。自然语言中包含语言术语（模糊术语）是很常见的，而模糊（灵活）查询在数据库中也得到了广泛的研究。f-KGQA 可以处理不同类型的问题，包括简单问题、复杂问题和带有模糊术语的问题。更重要的是，用户可以根据自己的理解灵活定义模糊术语。我们的实验结果证明了 f-KGQA 在处理模糊术语问题方面的有效性和适用性。

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来源期刊

Fuzzy Sets and Systems 数学-计算机：理论方法

CiteScore

6.50

自引率

17.90%

发文量

321

审稿时长

6.1 months

期刊介绍： Since its launching in 1978, the journal Fuzzy Sets and Systems has been devoted to the international advancement of the theory and application of fuzzy sets and systems. The theory of fuzzy sets now encompasses a well organized corpus of basic notions including (and not restricted to) aggregation operations, a generalized theory of relations, specific measures of information content, a calculus of fuzzy numbers. Fuzzy sets are also the cornerstone of a non-additive uncertainty theory, namely possibility theory, and of a versatile tool for both linguistic and numerical modeling: fuzzy rule-based systems. Numerous works now combine fuzzy concepts with other scientific disciplines as well as modern technologies. In mathematics fuzzy sets have triggered new research topics in connection with category theory, topology, algebra, analysis. Fuzzy sets are also part of a recent trend in the study of generalized measures and integrals, and are combined with statistical methods. Furthermore, fuzzy sets have strong logical underpinnings in the tradition of many-valued logics.