ODRL and beyond: practical applications and challenges for policy-base access and usage control.

OPAL 2025

Co-located with the Extended Semantic Web Conference

Portorož, Slovenia · June 1 or 2, 2025

See Call for Papers

Call for Papers

Empowering individuals and organisations to share data responsibly and efficiently has become a critical challenge in today's digital landscape. Over the past few years, various standards, descriptive languages, and technologies have emerged to address this need, enabling greater control, transparency, and interoperability in data-sharing practices. Among these, the Open Digital Rights Language (ODRL) is the W3C language to represent policies related to permissions, prohibitions, and obligations in various data-usage and digital rights management scenarios using Semantic Web technologies, specified as a core model and vocabulary.

In recent years, significant efforts have been dedicated to enforcing and evaluating ODRL policies, moving from theoretical exploration to practical implementations. This progress is exemplified by the recognition of ODRL as a recommended standard for building data spaces as discussed by the International Data Spaces Association, Gaia-X or FIWARE as a road to European digital sovereignty, or its adoption from the SOLID open standard for decentralised data store called Pods, where it plays a crucial role managing data usage rights, defining usage control policies, and supporting interoperability.

However, while ODRL has proven valuable for establishing rights management frameworks, several questions remain regarding its real-world application and the challenges associated with practical use cases. This workshop aims to gather researchers, practitioners, and stakeholders to share practical experiences, innovative applications, and lessons learned from using ODRL in diverse scenarios.

Topics of interest

  • Data governance and management in centralised and decentralised Knowledge Graphs.
  • Policy enforcement and conflict resolution in real-world applications.
  • Formalization of user and organisational preferences for data sharing using ODRL.
  • Comparative analysis of ODRL with other standards for data usage and rights management.
  • Addressing trust and compliance challenges in open and distributed data ecosystems.
  • Innovative approaches Leveraging Large Language Models (LLMs) to support reasoning, validation, and generation of ODRL policies.
  • Other topics related to ODRL and policies.

Authors Guideline

Submissions must be in PDF, formatted in the style of the CEUR template. Please, share your contribution before the deadline through the EasyChair platform. The accepted contributions will be published in the proceedings of the workshop. Each accepted paper needs to be presented by one of the authors at the workshop.

Regular Papers (15 pages)

Submissions accepted include either research or resource papers.

Short Papers (8 pages)

Submissions accepted include either research or resource papers. Exceptional articles could be potentially extended for the proceedings.

Demo and poster papers (4 pages)

Demo papers must provide pre-recorded or live demonstration besides the article presentation. Poster presentations require to bring a physical poster (size A3).

Minute of Madness or position papers (1-2 pages)

Review and Publication

The workshop follows a double-blind review process, where the identity of both authors and reviewers are concealed. Submitted papers must be anonymized.

Engage & Participate

Interactive Prizes

During the event, participants will be awarded interactive prizes, including certificates (e.g., Best Paper or Best Presentation) and physical gifts. Each attendee will receive 3D-printed tokens representing specific prizes and can award them to the speakers they believe deserve each prize. This interactive approach will not only determine the winners but also encourage meaningful interactions between attendees and speakers throughout the event.

Minute of Madness

The event will kick off with a "Minute of Madness," where each speaker will have 1-2 minutes and a single slide to briefly present their work. This fast-paced introduction provides attendees with a quick overview and sparks early discussions, ensuring engagement right from the start.

Audience-Driven Roundtable

The final session will be an interactive roundtable on key ODRL topics, including current challenges and future directions. Attendees will submit questions and suggestions via physical cards, and these will be prioritized for discussion. The session will encourage a collaborative exchange, with key outcomes documented and included in a post-event publication.

Program

To be announced.

Important dates

All deadlines are 23:59 AoE
7 MARCH, 2025

Abstract submission

Submit your abstract (optional but recommended)

14 MARCH, 2025

Submission papers

Submit your paper

15 APRIL, 2025

Authors notification

The notification and reviews from our Program Committee will be available.

11 MAY 2025

Submission camera ready

Time to have your paper ready for being published. All the accepted paper will be published in the proceedings.

1-2 JUNE, 2025

Event

Keynote, papers presentations, minute of madness and a lot of discussion. Remember! If your contribution is accepted, it needs to be presented by one of the authors at the event.

Organizers

Andrea Cimmino

Permanent Lecturer, UPM
Nicoletta Fornara

Nicoletta Fornara

Lecturer and Researcher, USI

John Domingue

Professor, The Open University

Víctor Rodríguez-Doncel

Assoc. Prof., UPM

Program Committee

To be announced.

Supported by