Comparative Analysis of Approaches for Geometric Data Representation in RDF
July 11, 2025 / D. Elshani
Lecture
FEUP – University of Porto, Portugal
On July 11, 2025, Diellza Elshani will present recent research at the Linked Data in Architecture and Construction (LDAC 2025) workshop, hosted at the Faculty of Engineering, University of Porto.
The lecture, titled "Comparative Analysis of Approaches for Geometric Data Representation in RDF", investigates the capabilities and limitations of three major strategies for integrating 3D geometry into RDF knowledge graphs. The study evaluates in-graph modeling, semantic query extensions like GeoSPARQL and BIMSPARQL, and hybrid systems linking RDF to native geometry engines such as PostGIS and CGAL.
Drawing from real-world implementation experience at GROPYUS Technologies, the presentation offers a critical comparison of expressiveness, queryability, validation, and scalability across these approaches—highlighting the essential role of formats like WKT and the potential of extending SPARQL with native geometry functions.
The paper is co-authored by Diellza Elshani, Ali Nakhaee, and Professor Thomas Wortmann from the Institute for Computational Design and Construction (ICD/CA), University of Stuttgart, and Anthony A. Arrascue, Haris Isakovic, Navid Hedayati, and Janakiram Karlapudi from GROPYUS Technologies GmbH, Berlin.
The LDAC workshop brings together leading researchers and practitioners working at the intersection of semantic web technologies and the built environment. Diellza’s talk is part of the Semantics session chaired by André Borrmann, and contributes to ongoing efforts to bridge geometric data with the Linked Building Data ecosystem.