Search Results

In this paper we consider how Qualitative Spatial Reasoning (QSR) can be used to answer queries over large-scale knowledge graphs such as YAGO and DBPedia. We describe the challenges associated with spatially querying knowledge graphs such as ...

• Demonstration of techniques to develop enhanced large-scale knowledge graphs.
• Integration of qualitative spatial reasoning into query answering.
• Development of a distributed spatial query answering system for large-scale knowledge ...

This paper explores the representation of geospatial knowledge within narratives through a Semantic Web approach. We introduce the NOnt+Space (NOnt+S) model, an extension of the CIDOC CRM-based Narrative Ontology, which allows the representation of ...

This paper explores the capabilities of the Geospatial Semantic Web to support scholars in studying the geographic knowledge included in medieval and Renaissance works. In the context of the Italian national research project IMAGO, we developed a ...

Nowadays geo-spatial knowledge graph is expanding gradually in Location Bases Services (LBS) to improve the search relevancy as well as to present background information about points of interests. They allow answering complex GeoSPARQL queries ...

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 endpoints on top of OGC standard Web Coverage Processing Services (WCPS). ...

• Efficient support for GeoSPARQL queries on top of raster coverages.
• Definition of raster coverage to RDF mapping approaches.
• Federated vector–raster geospatial queries enabled with SPARQL.
• Raster data access enabled without ...

This talk discusses the development of a spatiotemporal data model for an urban gazetteer. The function of gazetteers is to obtain descriptions uniquely identifying places referred to in discourse. Often, they are lists of places containing place name, ...

With the advancement of Semantic Technologies, large geospatial data sources have been increasingly published as Linked data on the Web. The LinkedGeoData project is one of the most prominent such projects to create a large knowledge ...

We introduce an approach to semantically represent and query raster data in a Semantic Web graph. We extend the GeoSPARQL vocabulary and query language to support raster data as a new type of geospatial data. We define new filter functions and ...

Great progress to digitize the world’s available Biodiversity and Biogeography data have been made recently, but managing data from many different providers and research domains still remains a challenge. A review of the current landscape of metadata ...

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 can be used, along with several operators and optimizations we ...

In this paper, we propose an OBDA approach for accessing geospatial data stored in relational databases using the R2RML mappings and OGC standard GeoSPARQL. On the theoretical side, we provide a formalization of GeoSPARQL in terms of ...

Linked data (LD) is a technology to support publishing structured data on the web so that it may be interlinked. Building Information Modelling (BIM) is a key enabler to support integration of building data within the buildings life cycle (BLC). LD can ...

This article describes how public health information management is an interdisciplinary application which deals with cross linked application domains. Geospatial environment, place and meteorology parameters effect public health. Effective decision ...

While existing Linked Datasets provide detailed representations of Cultural Heritage objects, the locations where the objects originate from is often not accurately represented. Countries, municipalities, and excavation sites are commonly ...

Urban planning data are of big importance to both general public and domain experts like civil engineers, architects or urban planning specialists. Typically, the data are scattered within many datasets containing both geographical knowledge and ...

CRMgeo is a formal ontology intended to be used as a global schema for integrating spatiotemporal properties of temporal entities and persistent items. Its primary purpose is to provide a schema consistent with the CIDOC CRM to integrate geoinformation ...

Building Information Modelling (BIM) is a key enabler to support integration of building data within the buildings life cycle and is an important aspect to support a wide range of use cases, related to building navigation, control, sustainability, etc. ...

The concept of "location" provides one a useful dimension to explore, align, combine, and analyze data. Though one can rely on bespoke GIS systems to conduct their data analyses, we aim to investigate the feasibility of using Semantic Web technologies ...

The INSPIRE Directive by the European Commission sets the legal and technical foundations towards interoperable Spatial Data Infrastructures (SDIs) across Europe. EU member states are already providing such services for several geospatial data themes (...

An immense wealth of data is already accessible through the Semantic Web and an increasing part of it also has geospatial context or relevance. Although existing technology is mature enough to integrate a variety of information from heterogeneous ...