Geospatial information has been indispensable for many application fields, including traffic
planning, urban planning, and energy management. Geospatial data are mainly stored in …

In this paper, we propose to extend SPARQL functions for querying Industry Foundation
Classes (IFC) building data. The official IFC documentation and BIM requirement checking …

We are witnessing an increasing usage of location data by a variety of applications.
Consequently, information systems are required to deal with large datasets containing raw …

Semantic technologies are at the core of Earth Observation (EO) data integration, by
providing an infrastructure based on RDF representation and ontologies. Because many EO …

Geospatial extensions of SPARQL, like GeoSPARQL and stSPARQL, have been defined
since 2007, and while several geospatial RDF stores have implemented a substantial part of …

This paper describes a first effort for the semantic mediation between heterogeneous
environmental observation datasets through the Sensor Observation Service (SOS) …

This paper presents the design of a GeoSPARQL query processing solution for scientific
raster array data, called GeoLD. The solution enables the implementation of SPARQL …

Wearable and mobile devices are widely used for crowdsensing, as they come with many
sensors and are carried everywhere. Among the sensing data, videos annotated with …

Trajectory acquisition, management, and processing are important tasks for any application
that deals with spatiotemporal data. In order to perform these tasks effectively, it is important …

We present a general encoding scheme for the efficient management of spatial RDF data.
The scheme approximates the geometries of the RDF entities inside their (integer) IDs and …