Automatic Creation of ShEx Schemas for RML-Based RDF Knowledge Graph Validation (RML 기반의 RDF 지식 그래프 검증을 위한 ShEx 스키마의 자동 생성)

Ji-Woong Choi (최지웅)

doi:10.9708/jksci.2022.27.11.067

Automatic Creation of ShEx Schemas for RML-Based RDF Knowledge Graph Validation

Journal of The Korea Society of Computer and Information
Abbr : JKSCI
2022, 27(11), pp.67-80
DOI : 10.9708/jksci.2022.27.11.067
Publisher : The Korean Society Of Computer And Information
Research Area : Engineering > Computer Science
Received : October 27, 2022
Accepted : November 16, 2022
Published : November 30, 2022

Ji-Woong Choi ¹

¹숭실대학교

Accredited

ABSTRACT

In this paper, we propose a system which automatically generates the ShEx schemas to describe and validate RDF knowledge graphs constructed by RML mapping. ShEx schemas consist of constraints. The proposed system generates most of the constraints by converting the RML mapping rules. The schemas consisting only of constraints obtained from mapping rules can help users to figure out the structure of the graphs generated by RML mapping, but they are not sufficient for sophisticated validation purposes. For users who need a schema for validation, the proposed system is also able to provide the schema with added constraints generated from metadata extracted from the input data sources for RML mapping. The proposed system has the ability to handle CSV, XML, JSON or RDBMS as input data sources. Testing results from 297 cases show that the proposed system can be applied for RDF graph validation in various practical cases.

KEYWORDS

RML, ShEx, RDF, Knowledge Graph, Validation

Citation status

* References for papers published after 2023 are currently being built.

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Journal of The Korea Society of Computer and Information 2023 KCI Impact Factor : 0.65

Automatic Creation of ShEx Schemas for RML-Based RDF Knowledge Graph Validation

ABSTRACT

KEYWORDS

Citation status

* References for papers published after 2023 are currently being built.

Journal of The Korea Society of Computer and Information 2023 KCI Impact Factor : 0.65

Automatic Creation of ShEx Schemas for RML-Based RDF Knowledge Graph Validation

ABSTRACT

KEYWORDS

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* References for papers published after 2023 are currently being built.