Keynotes

We are very pleased to announce the TPDL 2025 invited speakers.

Yannis Ioannidis, National and Kapodistrian University of Athens

Yannis Ioannidis (Ph.D., Computer Sciences, UC Berkeley; MSc, Applied Mathematics, Harvard University; Diploma, Electrical Engineering, National Technical University of Athens) is the President of the Association for Computing Machinery (ACM). He is a Professor at the Department of Informatics and Telecommunications of the National and Kapodistrian University of Athens as well as an Associated Faculty at the "Athena" Research and Innovation Center, where he also served as the President and General Director for 10 years. His research interests include Database and Information Systems, Data Science, Data and Text Analytics, Data Infrastructures and Digital Repositories, Recommender Systems and Personalization, and Human-Computer Interaction, topics on which he has published over 170 articles in leading journals and conferences and also holds four patents. His work is often inspired by and applied to data management and analysis problems that arise in industrial environments or in the context of other scientific fields (Social Sciences and Humanities, Life Sciences, Physical Sciences) and the Arts. He has been the coordinator and legal entity head of OpenAIRE, which implements the European policies on open access to research publications and data. He is the software director of the European Human Brain Project flagship initiative, the coordinator of the EOSC Future strategic project, which implements the core elements of the European Open Science Cloud, and a coordinator or partner in tens of other European and national research and innovation projects. He is an ACM and IEEE Fellow, a member of Academia Europaea, and a recipient of several research and teaching awards. He has been the Greek delegate to the European Strategy Forum on Research Infrastructures (ESFRI) for more than 10 years and a co-chair of the Global Climate Hub of the UN Sustainable Development Solutions Network (UN SDSN).

"Digital Humanities on the Semantic Web: from Infrastructure to Practical Applications, AI-based Knowledge Discovery, and Web of Wisdom"

by Eero Hyvönen, Aalto University

Abstract

Publishing Cultural Heritage (CH) data and Digital Humanities (DH) has evolved in phases from text carving and handwriting to printing texts, to publishing texts on-line, to publishing FAIR linked data comprehensible to computers for data enrichment and analysis, and to AI-based knowledge discovery on the Web, a “Web of Wisdom” [1]. In this keynote, lessons learned are overviewed on developing a national Semantic Web infrastructure [2] and over 20 in-use systems based on it with up to millions of end users during 2002-2024 [3]. The underlying linked data in these applications include museum collections, bibliographical data in libraries, medieval and renaissance manuscripts, military history, biographies, narratives, historical letter data, archaeological finds, legislation, parliamentary speeches, and art. Targeted to Digital Humanities researchers, application developers, and the public, these systems contain a Linked Open Data (LOD) service with a live SPARQL endpoint that can be used with modest programming skills for DH research, and a ready-to-use semantic portal on top of it. This work has led into the so-called Sampo Model for creating and publishing CH Knowledge Graphs (KG) as LOD services and semantic portal User Interfaces (UI).

Eero Hyvönen is Professor of semantic media technology at the Aalto University, Department of Computer Science, and director of Helsinki Centre for Digital Humanities (HELDIG) at the University of Helsinki. His research has focused since 2001 on Semantic Web and Linked (Open) Data technologies, developing with his Semantic Computing Research Group (SeCo) (https://seco.cs.aalto.fi/) the national semantic web infrastructure in Finland (https://seco.cs.aalto.fi/projects/lodi4dh/) and its applications in different areas, especially in Cultural Heritage and for Digital Humanities research (https://seco.cs.aalto.fi/applications/sampo/). Eero Hyvönen has published nearly 600 articles and books and got nearly 30 international and national honorary prizes and acknowledgements.

More information:
[1] Eero Hyvönen: Using the Semantic Web in Digital Humanities: Shift from Data Publishing to Data-analysis and Serendipitous Knowledge Discovery. Semantic Web, vol. 11, no. 1, pp. 187-193, 2020.
[2] Eero Hyvönen: How to Create a National Cross-domain Ontology and Linked Data Infrastructure and Use It on the Semantic Web. Semantic Web, vol. 15, no. 4, pp. 1499-1513, 2024.
[3] Eero Hyvönen: Digital Humanities on the Semantic Web: Sampo Model and Portal Series. Semantic Web, vol. 14, no. 4, pp. 729-744, 2023.