Sixth International Workshop on a Semantic Data Space for Transport

Co-located with the SEMANTiCS Conference 2025

Vienna - 3rd of September 2025

Sem4Tra Call for Papers

Integrated and intelligent transportation cannot be realized without a Data Space where data can flow and be integrated automatically. A Mobility Data Space improves every aspect of the passenger journey, from ticketing to navigation, from traffic to parking management, and from car/bike sharing to door-to-door travel. A Logistics Data Space should safely and securely provide all information for optimizing supply chains in terms of both saving time and reducing carbon emissions. The federated and heterogeneous nature of the mobility and logistics sectors makes the application of Data Spaces and semantic technologies especially relevant. Data Space technology enables participants to regulate, which participants can access parts of the data and under what conditions.

Semantic technologies can provide ways to align differing meanings among transport modalities. A Digital Product Passport/Provenance can gather all information from heterogeneous sources to give a full picture of a product's heritage throughout its supply chain. The development of multimodal travel information, planning, and booking services, as well as interoperability between business applications, is currently limited due to the fragmentation and incompatibility of interchange formats and protocols both within and across transport sectors.

This workshop seeks to advance the Mobility and Logistics Data Space through Semantic Web, Linked Data, and Knowledge Graph techniques. In scope are methods to query and reason over integrated data on the web that can help an end-user plan and book a trip from A to B, as well as extract insights and share information for supply chain operations management. We target researchers and practitioners who are contributing to the transformation of passenger and freight transportation by proposing new solutions based on semantic techniques and technologies. The workshop is an opportunity to disseminate and discuss use cases and studies demonstrating the application of semantic and web technologies in the broader transportation domain to tackle the aforementioned challenges.

Topics

  • Mobility and Logistics Data Spaces
  • Query languages and methods for a Web of Transport Data
  • Creating automated alignments between datasets using the various specifications
  • Recommendations for mobility specification builders to raise interoperability between specifications
  • Alignments with existing or upcoming general-purpose Web API specifications such as W3C Web payments or Linked Web Storage
  • Interfaces between enterprise data and the Semantic Web
  • Discovery methods for mobility information through for example DCAT-based portals
  • The exploitation of Transport Data on the Web
  • Challenges and opportunities for route planning and ticketing
  • Personalized route planning taking into account data stored on your client or personal data space
  • Anonymization in the mobility space for data sharing
  • Benchmarking of Web Infrastructure
  • Comparing ticketing API architectures
  • Comparing route planning API architectures
  • Publishing and querying planned transport data and their live updates on the Web
  • Knowledge Graphs and Ontologies in the transportation domain
  • Aligning regional vocabularies with international reference domain models such as Transmodel, NeTEx, SIRI or DATEXII
  • Reusing existing linked datasets, such as Geonames, OpenStreetMap or Wikidata in the transport domain
  • Bridging the gap with non-RDF specifications such as MobilityDataSpecification, General Transit Feed Specification, General Bike Feed Specification, TOMP API or MaaS API
  • Building a Knowledge Graph of the transportation domain by integration and conversion of heterogeneous data sources (e.g., National Access Points or local sources)
  • Extensions, implementations, or algorithms on top of Mobility DCAT-AP
  • Use cases or datasets of applying semantic technologies and/or data spaces in the logistics or mobility sector
  • Smart mobility, such as logistics, infrastructure, navigation, or booking/ticketing.
  • Making route suggestions and driving planning recommendations more explainable and transparent
  • Applications of Digital Product Passport/Provenance for supply chain tracking or CO2 emissions calculations
  • Semantic data sets from the transport or logistics domain, such as (railway) infrastructure, supply chain events, or observed CO2 emissions

Authors Guideline

Format

Authors can choose the best way to express their work, such as HTML or PDF. However, a CEUR layout should be provided.

Contributions

  • Long research/experience papers (10-12 pages)
  • Short research papers (4-6 pages)
  • Position papers (4-6 pages)
  • System/demo papers (4-6 pages)
  • Abstract from journal papers (2-4 pages)
  • 5 minutes lightning talk for project or idea (1 page max)

Review and Publication

Please, share your contribution before the deadline through EasyChair. The accepted contributions will be published in the proceedings of the workshop with CEUR.

Program

TBA

Important dates

28 June, 2025

Submission papers

Submit your paper

5 July, 2025

Notifications

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

TBA

Submission camera ready

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

3 September, 2025

Event

Keynote, papers presentations, demo jam 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

Shahrom Sohi

Researcher, WU Vienna

Mersedeh Sadeghi

Senior Researcher, University of Cologne

Pieter Colpaert

Senior Researcher, imec - IDLab UGent

Ghislain Atemezing

Operational Data Unit, European Railways Agency

Cornelis Bouter

Sciencetist Innovator, TNO

Julián Rojas

Postdoc Researcher, imec - IDLab UGent

Program Committee

  • Larysa Zhuchyi, railML.org
  • David Prenninger, Xatellite mobility
  • Arthur Vercruysse, Ghent University - imec
  • more TBA