Apologies for cross-posting! The 4th International Workshop on Geospatial Linked Data will be co-located with the European Semantic Web Conference (ESWC) on 7th June 2021 ( dice-group.github.io/GeoLD2021/). Abstract: ======================================= Geospatial data is vital for both traditional applications like navigation, logistics, and tourism and emerging areas like autonomous vehicles, smart buildings, and GIS on demand. Spatial linked data has recently transitioned from experimental prototypes to national infrastructure. However, the next generation of spatial knowledge graphs will integrate multiple spatial datasets with the large number of general datasets that contain some geospatial references (e.g., DBpedia, Wikidata). This integration, either on the public Web or within organizations has immense socio-economic as well as academic benefits. The upsurge in Linked data related presentations in the recent Eurogeographics data quality workshop shows the deep interest in Geospatial Linked Data (GLD) in national mapping agencies. GLD enables a web-based, interoperable geospatial infrastructure. This is especially relevant for delivering the INSPIRE directive in Europe. Moreover, geospatial information systems benefit from Linked Data principles in building the next generation of spatial data applications e.g., federated smart buildings, self-piloted vehicles, delivery drones or automated local authority services. This workshop invites papers covering the challenges and solutions for handling with GLD, especially for building high quality, adaptable, geospatial infrastructures and next-generation spatial applications. We aim to demonstrate the latest approaches and implementations and to discuss the solutions to challenges and issues arising from research and industrial organizations. The best papers will be invited to submit their extended version to the special issue in the ISPRS International Journal of Geo-Information Semantic Spatial Web. Topics of interest ======================================= • GLD vocabularies and standards (GeoSPARQL, INSPIRE, W3C, OGC) • Extraction/transformation of GLD from native geospatial data sources • Integration (schema mapping, interlinking, fusion) techniques for Geospatial RDF Data • Enrichment, quality and evolution of Linked Data with Geospatial information • Machine Learning improving GLD processing • Distributed solutions for GLD management (storing, querying, mapping) • Algorithms and tools for large scale, scalable GLD management • Efficient Indexing and Querying of GLD • Geospatial-specific Reasoning on RDF Data • Ranking techniques on querying Geospatial RDF Data • Advanced querying capabilities on Geospatial RDF Data • Benchmarking of GLD applications • GLD in social web platforms and applications • Visualization models/interfaces for browsing/authoring/querying GLD • Real world applications/use cases/paradigms using GLD • Evaluation/comparison of tools/libraries/frameworks for GLD • Data governance models for GLD Important Dates ======================================= Paper submission: 1st March 2021 15 March 2021 (Extended) Camera-ready paper submission: 9th April 2021 Workshop Date: 7th June 2021 *Organizing Committee: * ======================================= Dr. Beyza Yaman (ADAPT Centre, Dublin City University, Ireland) Dr. Mohamed Ahmed Sherif (University of Paderborn, Germany) Assoc. Prof. Dr. Armin Haller (Australian National University, Australia) Prof. Dr. Axel-Cyrille Ngonga Ngomo (University of Paderborn, Germany) We are looking forward to your submissions! Best Regards, Beyza Yaman.