Analyzing a Knowledge Graph of Industry4.0 Standards

TL;DR

This paper presents a knowledge-driven approach to model and analyze Industry 4.0 standards within a comprehensive knowledge graph, enhancing interoperability and revealing implicit relations among standards.

Contribution

The paper introduces the I40KG, a novel knowledge graph integrating over 200 standards and frameworks, with automated reasoning to uncover implicit relations and improve semantic interoperability.

Findings

Connectivity in the knowledge graph increased by up to 80% due to reasoning and linking.

Up to 96% of the discovered relations were validated for accuracy.

The approach supports resolving semantic conflicts in Industry 4.0 standards.

Abstract

In this article, we tackle the problem of standard interoperability across different standardization frameworks, and devise a knowledge-driven approach that allows for the description of standards and standardization frameworks into an Industry 4.0 knowledge graph (I40KG). The STO ontology represents properties of standards and standardization frameworks, as well as relationships among them. The I40KG integrates more than 200 standards and four standardization frameworks. To populate the I40KG, the landscape of standards has been analyzed from a semantic perspective and the resulting I40KG represents knowledge expressed in more than 200 industrial related documents including technical reports, research articles, and white papers. Additionally, the I40KG has been linked to existing knowledge graphs and an automated reasoning has been implemented to reveal implicit relations between standards as well as mappings across standardization frameworks. We analyze both the number of discovered relations between standards and the accuracy of these relations. Observed results indicate that both reasoning and linking processes enable for increasing the connectivity in the knowledge graph by up to 80%, whilst up to 96% of the relations can be validated. These outcomes suggest that integrating standards and standardization frameworks into the I40KG enables the resolution of semantic interoperability conflicts, empowering the communication in smart factories.