The adoption of research for improving society, via both the public and private sector, can provide crucial insights for future research. Such adoption may reveal, for example, the strengths and weaknesses of a particular technology in a specific context; whether or not the results demonstrated in a research setting hold true in practice; potential blind spots in the research literature; etc. Such insights can in turn lead to novel research questions, improved research methodologies, and ultimately, more impactful research.

In this Call for Use-Case Articles, we solicit submissions of journal articles that describe in detail use-cases (in the form of applications, events, products, services, etc.) that put into practice research on Graph Data & Knowledge (GD&K) per the topics described in TGDK’s Call for Papers. Specifically, we are interested in applied research initiatives that involve adoption – be it a user community, a clientele, a governmental organization, etc. – beyond the organizations or persons who develop the initiative, and beyond the Graph Data & Knowledge research community itself. The initiative should have experienced significant adoption in order to generate novel insights into the GD&K-related technology being applied. Particularly welcome are insights that would be illusive in a pure-research setting, or that contradict the conventional wisdom in such a setting.

Though there are no fixed upper or lower page limits, we expect the submission to be in the range of 10–20 pages using TGDK’s single column LaTeX template (see Author Instructions). We expect submissions to provide (at least):

• a discussion of the problem addressed via the use-case, and who stands to benefit (users, companies, organisations, etc.);
• the rationale behind the selection of GD&K-related technology for the use-case, along with a detailed technical description of how this technology is adopted;
• an analysis of the adoption and impact of the use-case;
• an empirical analysis of the strengths and weaknesses of the GD&K-related technology in the context of the use-case;
• conclusions that present key insights stemming from the use-case, and that may also include open research questions or future research directions.

Though not required, we also welcome further contributions, such as resources, theorems, etc., that help to validate the adoption of the resource, or that may foster more impactful research.

We encourage authors to (optionally) write to the Editors-in-Chief with a brief description of their envisaged submission in order to ensure that it will be a good fit for this call.

We additionally require authors to provide access to all relevant resources for the use-case and to link these resources from the submission. In case a resource cannot be made available (e.g., for privacy reasons, commercial reasons, etc.), we require that this is clearly stated in the submission, including what resources are withheld and why. A Supplementary Material Statement is required for all submissions to this call.

Extended versions of previous publications are welcome (including, for example, extended versions of Applications/In-Use/Industry Track papers in relevant conferences) so long as significant novel contributions are presented. If the use-case has been described in a previous publication, we expect the submission to cite this previous publication, and to clearly indicate the advances made since that prior publication as described by the current submission. Pre-prints with informal publication (e.g., on arXiv) do not count as a previous publication; in other words, we welcome submissions based on articles that have only been informally published as pre-prints. We do not accept submissions that are under review elsewhere.

Submissions will undergo a standard peer review process, but will be subject to unique criteria, as follows:

• Novelty: The use-case must be novel in nature and lead to distinctive insights; if a previous submission has been published about the use-case, we expect the submission to describe substantial novel contributions.
• Relevance: The topic of the submission must be relevant to TGDK's research scope, as described in the Call for Papers.
• Clarity: The submission must be well-written, understandable, self-contained, accessible and contain all of the details required by this Call.
• Technical soundness: The submission must be technically sound, and the use-case described must follow best practices and employ state-of-the-art methods (or justify why they are not used).
• Adoption: The use-case must enjoy significant adoption via a third-party target audience of beneficiaries (users, companies, governments, organizations, etc., external to use-case developers and the GD&K research community).
• Insights: The use-case must generate insights with the potential for impact on the research community, which may include positive or negative results, critical discussion, etc.

As a Diamond Open Access journal, official versions of accepted TGDK papers (as accessible via DOI) are published by Dagstuhl Publishing and made available for free online without fees for authors nor readers.

The timeline for this Special Issue is as follows:

• Submissions: March 30, 2025
• Author Notifications: June 30, 2025
• Revisions: July 31, 2025
• Author Notifications: September 31st, 2025
• Publication: Q4 2025