{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,10]],"date-time":"2026-04-10T10:04:33Z","timestamp":1775815473092,"version":"3.50.1"},"reference-count":118,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2022,4,24]],"date-time":"2022-04-24T00:00:00Z","timestamp":1650758400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000780","name":"European Commission","doi-asserted-by":"publisher","award":["101016835"],"award-info":[{"award-number":["101016835"]}],"id":[{"id":"10.13039\/501100000780","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100005416","name":"The Research Council of Norway","doi-asserted-by":"publisher","award":["309691"],"award-info":[{"award-number":["309691"]}],"id":[{"id":"10.13039\/501100005416","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Future Internet"],"abstract":"<jats:p>Knowledge graphs have, for the past decade, been a hot topic both in public and private domains, typically used for large-scale integration and analysis of data using graph-based data models. One of the central concepts in this area is the Semantic Web, with the vision of providing a well-defined meaning to information and services on the Web through a set of standards. Particularly, linked data and ontologies have been quite essential for data sharing, discovery, integration, and reuse. In this paper, we provide a systematic literature review on knowledge graph creation from structured and semi-structured data sources using Semantic Web technologies. The review takes into account four prominent publication venues, namely, Extended Semantic Web Conference, International Semantic Web Conference, Journal of Web Semantics, and Semantic Web Journal. The review highlights the tools, methods, types of data sources, ontologies, and publication methods, together with the challenges, limitations, and lessons learned in the knowledge graph creation processes.<\/jats:p>","DOI":"10.3390\/fi14050129","type":"journal-article","created":{"date-parts":[[2022,4,24]],"date-time":"2022-04-24T22:22:41Z","timestamp":1650838961000},"page":"129","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":59,"title":["Building Semantic Knowledge Graphs from (Semi-)Structured Data: A Review"],"prefix":"10.3390","volume":"14","author":[{"given":"Vetle","family":"Ryen","sequence":"first","affiliation":[{"name":"Department of Informatics, University of Oslo, Gaustadall\u00e9en 23B, 0373 Oslo, Norway"}]},{"given":"Ahmet","family":"Soylu","sequence":"additional","affiliation":[{"name":"Department of Computer Science, OsloMet\u2014Oslo Metropolitan University, Pilestredet 35, 0167 Oslo, Norway"}]},{"given":"Dumitru","family":"Roman","sequence":"additional","affiliation":[{"name":"Sustainable Communication Technologies, SINTEF AS, Forskningsveien 1, 0373 Oslo, Norway"}]}],"member":"1968","published-online":{"date-parts":[[2022,4,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"96","DOI":"10.1145\/3418294","article-title":"Knowledge Graphs","volume":"64","author":"Gutierrez","year":"2021","journal-title":"Commun. 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