Date: Tuesday May 19, 2026 - 16:30–18:00 BST = 17:30–19:00 CEST

Convenors: Monica Berti (Leipzig University), Camillo Pellizzari (Scuola Normale Superiore, Pisa)

Youtube link: https://www.youtube.com/live/HuFZNZ7E9pw

Slides: Slides Session 5

The goal of this session is to introduce the Wikidata knowledge base and its use for the study of the Graeco-Roman World. After an introduction, the session will focus on examples to extract information from Wikidata and structure Wikidata items about Ancient Greek and Latin entities. The session will be structured in this way:

• Introduction to Wikidata and the Wikidata Query Service;
• Query examples for Wikidata items of the Paulys Realencyclopädie der classischen Altertumswissenschaft (Pauly-Wissowa);
• Query examples and visualization of Wikidata statements in the Catalog of the Linked Ancient Greek and Latin (LAGL) project.

• Fantoli, M., Boano, V.I., de Graaf, E. and Pellizzari di San Girolamo, C.C. (2026) ‘Wikidata as a Knowledge Base for People of the Greco-Roman World’, Journal of Open Humanities Data, 12(1), p. 21. Available at: https://doi.org/10.5334/johd.457.
• Berti, M. (2025) ‘Linked Ancient Greek and Latin (LAGL) and Wikidata: Structuring and Reusing Data of Classical Literature’, Journal of Open Humanities Data, 11(1), p. 72. Available at: https://doi.org/10.5334/johd.423.

• Zhao, F. (2022) ‘A Systematic Review of Wikidata in Digital Humanities Projects’, Digital Scholarship in the Humanities, 38(2), pp. 852-874. Available at: https://doi.org/10.1093/llc/fqac083.
• Vrandečić, D., Pintscher, L. and Krötzsch, M. (2023) ‘Wikidata: The Making Of’. Companion Proceedings of the ACM Web Conference 2023, pp. 615-624. Available at: https://doi.org/10.1145/3543873.3585579.
• Berti, M. (ed.) Nomina Omina: Ancient Greek and Latin Proper Names in the Age of Artificial Intelligence. Digital Classics Online. Themenheft 12,2. Heidelberg: Propylaeum 2026. Available at https://doi.org/10.11588/dco.2026.12.2.
• Pellizzari di San Girolamo, C. C. (2026) ‘Hypotheseis, a Database of Named Entities Surrounding Greek Rhetorical Exercises’, Digital Classics Online, 12(2), pp. 82-100. Available at: https://doi.org/10.11588/dco.2026.12.112296.
• Pellizzari di San Girolamo, C. C. (2026). ‘Wikidata and Authority Files: Reconciliation and Cooperation Procedures‘. JLIS.It, 17(2), pp. 33-50. Available at https://doi.org/10.36253/jlis.it-698.

• General introduction to Wikidata: slides at https://commons.wikimedia.org/wiki/File:An_introduction_to_Wikidata_and_its_use_for_librarians_and_researchers.pdf and video at https://www.youtube.com/watch?v=4iiL9WFx2JY
• General introduction to editing Wikidata: slides at https://commons.wikimedia.org/wiki/File:Editing_Wikidata_(Art%2BFeminism_2026).pdf and video at https://www.youtube.com/watch?v=6vRrasGCifE&t=2750s

• Project page on German Wikisource: https://de.wikisource.org/wiki/Paulys_Realencyclop%C3%A4die_der_classischen_Altertumswissenschaft
• Project page on Wikidata: https://www.wikidata.org/wiki/Wikidata:WikiProject_Antiquity/Pauly-Wissowa
• Presentation Paulys Realencyclopädie. Paulys RE (1893-1980) on Wikisource.de: slides at https://commons.wikimedia.org/wiki/File:Paulys_Realencyclop%C3%A4die_der_classischen_Altertumswissenschaft_(RE)_1893-1980_on_Wikisource.de_(Wikicite_2025).pdf
• Presentation Interlinking of the Wikisource version of the Paulys Realencyclopädie der classischen Altertumswissenschaft (RE): slides at https://commons.wikimedia.org/wiki/File:Interlinking_of_the_Wikisource_version_of_the_Paulys_Realencyclop%C3%A4die_der_classischen_Altertumswissenschaft_(RE)_(WikiCite_2025).pdf

• LAGL (Linked Ancient Greek and Latin): https://www.lagl.org/
• LAGL Catalog: https://catalog.lagl.org
• WikiProject LAGL in Wikidata: https://www.wikidata.org/wiki/Wikidata:WikiProject_LAGL

• Exercise 1: write a query in the Wikidata Query Service listing all the persons speaking ancient Greek and having a LAGL author ID; for each item, the results should display the QID, the English label if present, the Ancient Greek label if present, and the LAGL ID.
• Exercise 2: write a query in the Wikidata Query Service listing all the authors of the articles of the Paulys Realencyclopädie der classischen Altertumswissenschaft regarding a person with occupation author (Q482980) or one of its recursive subclasses; for each item, the results should display the QID of the author, the German label of the author if present, the QID of the article, the German label of the article, the QID of the subject of the article, the English label of the subject of the article if present. Write also a second query counting the number of distinct articles written by each author and order the results by decreasing number of articles.