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The LUMEN Data Mesh: Connecting Science Across Domains Through Community-owned Data
Summary
Researchers presented the LUMEN Data Mesh architecture, a federated cross-domain data discovery infrastructure within EOSC linking mathematics, social sciences, earth system sciences, and molecular dynamics communities — illustrated in part through a cross-domain microplastics use case bridging environmental and molecular data without requiring communities to cede governance of their own data.
This record gathers the materials from the LUMEN webinar "The LUMEN Data Mesh: Connecting Science Across Domains Through Community-owned Data", held online on 30 April 2026 and presented by Julien Homo (Foxcub, LUMEN technical coordinator). The session introduced the LUMEN Data Mesh as a federated approach to interdisciplinary data discovery within EOSC, connecting four scientific communities — Mathematics, Social Sciences and Humanities, Earth System Sciences, and Molecular Dynamics — while preserving their autonomy over data, vocabularies, and governance. The webinar covered why cross-domain discovery matters now, the architecture and core concepts of the Data Mesh (Data Products, Data Contracts, the Meta-Search Service, and the wider Common Discovery Infrastructure), and what communities need to produce to join the federation, namely an API exposing metadata aligned with the DPROD ontology and a machine-readable Data Contract following the Open Data Contract Standard (ODCS). Three illustrative cross-domain use cases were presented (microplastics across SSH, Earth Systems and Molecular Dynamics; mathematical models for climate projections; and the sociology of scientific knowledge across SSH and Molecular Dynamics), followed by a live walkthrough of an early prototype of the cross-domain discovery interface. The upload contains: the slide deck in PPTX and PDF formats; the consolidated Mentimeter outputs capturing participant responses on Data Mesh principles, perceived relevance, community readiness, barriers to adoption, expected cross-domain assets, and key takeaways from the session. LUMEN is funded by the European Union under Grant Agreement no. 101187940.