Knowing Where via Knowledge Graph-based GeoEnrichment

ISWC 2023, 6 November, Athens, Greece


This tutorial will be a half-day tutorial. The first part will take place from 9:20 to 10:40, and the second part will take place from 11:20 to 12:40.

Session Duration Title
Opening 10 min. Why is Spatial Data Special in Knowledge Organization?
Know, Know Where, KnowWhereGraph 70 min. The KnowWhereGraph’s Ontology, Data, and Pilots
Break 40 min.
Browsing the KnowWhereGraph 10 min. Data Integration over the S2 Cell Grid System
20 min. Querying the KnowWhereGraph and Geovisualization
40 min. Building Tools on Top of the KnowWhereGraph
Closing 10 min. Ongoing and Future Work


Spatial principles of knowledge organization have received increasing attention over the past decades due to the fundamental importance of locations in everyday phenomena and a wide variety of emerging spatial data, such as linked open gazetteers and location-based sensor observations. This inspires recent years’ development on knowledge graph–based GeoEnrichment. In this tutorial, we will discuss relevant practices in the KnowWhereGraph, such as how to reuse the OGC GeoSPARQL standard and the Sensor, Observation, Sample, and Actuator (SOSA) ontology in observation-driven geo-ontology engineering, and how the S2 grid system helps achieve spatial data integration across different gazetteers. Participants will learn how knowledge graph—based GeoEnrichment supports knowledge discovery by swiftly answering questions like What is here, What happened here before, and How does this compare to other regions, and builds environmentally intelligent services in application areas, e.g., providing disaster responses for humanitarian relief.