# PMD Core Ontology: A Community Driven Mid-Level Ontology in the MSE Domain

## Authors: Henk Birkholz, Bernd Bayerlein, Markus Schilling, Jannis Grundmann, Thomas Hanke, Jörg Waitelonis, Harald Sack, Lutz Mädler

## Affiliations
1 Leibniz-Institut für Werkstofforientierte Technologien (IWT), Bremen, Germany
2 Bundesanstalt für Materialforschung und -prüfung (BAM), Berlin, Germany
3 FIZ – Leibniz Institute for Information Infrastructure, Karlsruhe, Germany
4 Fraunhofer-Institut für Werkstoffmechanik (IWM), Freiburg, Germany

## Abstract
Knowledge representation in the materials science and engineering (MSE) domain is a vast and multi-faceted challenge: Overlap, ambiguity, and inconsistency in terminology are common.
Invariant and variant knowledge are difficult to align cross-domain.
Generic top-level semantic terminology often is too abstract, while MSE domain terminology often is too specific.
In this presentation, an approach how to maintain a comprehensive and intuitive MSE-centric terminology composing a mid-level ontology--the PMD core ontology (PMDco)--via MSE community-based curation procedures is shown.
The PMDco is designed in direct support of the FAIR principles to address immediate needs of the global experts community and their requirements.
The illustrated findings show how the PMDco bridges semantic gaps between high-level, MSE-specific, and other science domain semantics, how the PMDco lowers development and integration thresholds, and how to fuel it from real-world data sources ranging from manually conducted experiments and simulations as well as continuously automated industrial applications.