About TGDK

Transactions on Graph Data and Knowledge (TGDK) is an Open Access journal that publishes research on graph-based abstractions for data and knowledge, and the techniques that such abstractions enable with respect to integration, querying, reasoning and learning. The scope of the journal thus intersects with areas such as Graph Algorithms, Graph Databases, Graph Representation Learning, Knowledge Graphs, Knowledge Representation, Linked Data and the Semantic Web. Also in-scope for the journal is research investigating graph-based abstractions of data and knowledge in the context of Data Integration, Data Science, Information Extraction, Information Retrieval, Machine Learning, Natural Language Processing, and the Web.

The journal is Open Access without fees for readers or for authors (also known as Diamond Open Access). Papers are published by Dagstuhl Publishing. Authors maintain the copyright of their works, and papers will be published under CC-BY 4.0.

See the journal's homepage on Dagstuhl Publishing.

TGDK@ISWC2025

TGDK will have a journal session at the 24th International Semantic Web Conference, in Nara, Japan, on November 4th, 2025. The session will feature an overview of the journal and its scope, short presentations of accepted TGDK articles, pitches for poster & demo presentations, as well as time for a group Q&A session.

The agenda will be as follows (local Japanese time, Meeting Room 201+202):

• 15:30 – 15:40: Welcome & Introduction
• 15:40 – 16:50: Short presentations
• 16:50 – 17:00: Q&A & Wrap-up

The following 3 articles will be presented as posters & demos:

• Knowledge Engineering Using Large Language Models. Bradley P. Allen, Lise Stork, Paul Groth. TGDK 1(1): 3:1-3:19 (2023)
• Autonomy in the Age of Knowledge Graphs: Vision and Challenges. Jean-Paul Calbimonte, Andrei Ciortea, Timotheus Kampik, Simon Mayer, Terry R. Payne, Valentina Tamma, Antoine Zimmermann. TGDK 1(1): 13:1-13:22 (2023)
• MELArt: A Multimodal Entity Linking Dataset for Art. Alejandro Sierra Múnera, Linh Le, Gianluca Demartini, Ralf Krestel. TGDK 2(2): 8:1-8:22 (2024)

The following 14 articles will be presented as short talks:

• Large Language Models and Knowledge Graphs: Opportunities and Challenges. Jeff Z. Pan, Simon Razniewski, Jan-Christoph Kalo, Sneha Singhania, Jiaoyan Chen, Stefan Dietze, Hajira Jabeen, Janna Omeliyanenko, Wen Zhang, Matteo Lissandrini, Russa Biswas, Gerard de Melo, Angela Bonifati, Edlira Vakaj, Mauro Dragoni, Damien Graux. TGDK 1(1): 2:1-2:38 (2023)
• Knowledge Graph Embeddings: Open Challenges and Opportunities. Russa Biswas, Lucie-Aimée Kaffee, Michael Cochez, Stefania Dumbrava, Theis E. Jendal, Matteo Lissandrini, Vanessa Lopez, Eneldo Loza Mencía, Heiko Paulheim, Harald Sack, Edlira Kalemi Vakaj, and Gerard de Melo. TGDK 1(1): 4:1-4:32 (2023)
• Knowledge Graphs for the Life Sciences: Recent Developments, Challenges and Opportunities. Jiaoyan Chen, Hang Dong, Janna Hastings, Ernesto Jimínez-Ruiz, Vanessa López, Pierre Monnin, Catia Pesquita, Petr Skoda, Valentina Tamma. TGDK 1(1): 5:1-5:33 (2023)
• Towards Ordinal Data Science. Gerd Stumme, Dominik Dürrschnabel, Tom Hanika. TGDK 1(1): 6:1-6:39 (2023)
• Machine Learning and Knowledge Graphs: Existing Gaps and Future Research Challenges. Claudia d'Amato, Louis Mahon, Pierre Monnin, Giorgos Stamou. TGDK 1(1): 8:1-8:35 (2023)
• Trust, Accountability, and Autonomy in Knowledge Graph-Based AI for Self-Determination. Luis-Daniel Ibáñez, John Domingue, Sabrina Kirrane, Oshani Seneviratne, Aisling Third, Maria-Esther Vidal. TGDK 1(1): 9:1-9:32 (2023)
• How Does Knowledge Evolve in Open Knowledge Graphs? Axel Polleres, Romana Pernisch, Angela Bonifati, Daniele Dell'Aglio, Daniil Dobriy, Stefania Dumbrava, Lorena Etcheverry, Nicolas Ferranti, Katja Hose, Ernesto Jimínez-Ruiz, Matteo Lissandrini, Ansgar Scherp, Riccardo Tommasini, Johannes Wachs. TGDK 1(1): 11:1-11:59 (2023)
• Towards Representing Processes and Reasoning with Process Descriptions on the Web. Andreas Harth, Tobias Käfer, Anisa Rula, Jean-Paul Calbimonte, Eduard Kamburjan, Martin Giese. TGDK 2(1): 1:1-1:32 (2024)
• Grounding Stream Reasoning Research. Pieter Bonte, Jean-Paul Calbimonte, Daniel de Leng, Daniele Dell'Aglio, Emanuele Della Valle, Thomas Eiter, Federico Giannini, Fredrik Heintz, Konstantin Schekotihin, Danh Le Phuoc, Alessandra Mileo, Patrik Schneider, Riccardo Tommasini, Jacopo Urbani, Giacomo Ziffer. TGDK 2(1): 2:1-2:47 (2024)
• The dblp Knowledge Graph and SPARQL Endpoint. Marcel R. Ackermann, Hannah Bast, Benedikt Maria Beckermann, Johannes Kalmbach, Patrick Neises, Stefan Ollinger. TGDK 2(2): 3:1-3:23 (2024)
• TØIRoads: A Road Data Model Generation Tool. Grunde Haraldsson Wesenberg, Ana Ozaki. TGDK 2(2): 6:1-6:12 (2024)
• Unified Multimedia Segmentation - A Comprehensive Model for URI-based Media Segment Representation. Jan Willi, Abraham Bernstein, Luca Rossetto. TGDK 2(3): 1:1-1:34 (2024)
• KG2Tables: A Domain-Specific Tabular Data Generator to Evaluate Semantic Table Interpretation Systems. Nora Abdelmageed, Ernesto Jimínez-Ruiz, Oktie Hassanzadeh, Birgitta König-Ries. TGDK 3(1): 1:1-1:28 (2025)
• Talking Wikidata: Communication Patterns and Their Impact on Community Engagement in Collaborative Knowledge Graphs. Elisavet Koutsiana, Ioannis Reklos, Kholoud Saad Alghamdi, Nitisha Jain, Albert Meroño-Peñuela, Elena Simperl. TGDK 3(1): 2:1-2:27 (2025).