Geospatial Data and the Semantic Web

Geospatial data or geographic information is the data that identifies a geographic location of natural or constructed features and boundaries on the Earth (e.g. oceans, buildings, countries, rivers, etc). Geographical knowledge bases are among the largest in existence and have high importance in a variety of everyday applications. The data can be mapped and often manipulated with Geographic Information Systems (GIS), however the integration of external data sets into these systems is time-consuming and complex. GeoKnow will provide the necessary tools and methods to easily integrate and process data across a wide range of data sources on the web of data.

GeoKnow EU project (2013-2015) has contributed with the GeoKnow Generator which is a stack of tools for bringing geospatial data to the Web of Data. These software tools are available in a Virtual Machine and as Debian packages at the Linked Data Stack. Together with these tools GeoKnow team has developed the Generator Workbench which is an unified interface for using these tools. This workbench offers several enterprise-ready features such as authentication and data access authorisation. An online demo of the Workbench and GeoKnow Generator tools is available here.

Tool Name Description
Limes-Service A link discovery framework for the Web of Data, supports 13 similarity measures of which six are geo-spatial distance measures.
Facete Facete2 is a web-based faceted browsing of RDF geospatial data. It provides domain independent faceted filtering capabilities operating directly on SPARQL
Sparqlify A SPARQL-to-SQL rewriter that enables one to define RDF views on relational databases and query them with SPARQL.
Deer Enrichment framework to extract implicit geospatial information through dereferencing, interlinking and Natural Language Processing.
TripleGeo-Service Transforms geometries from ESRI shapefiles, GML, KML, INSPIRE-aligned datasets for seven Data Themes, and several geospatially-enabled DBMSs (i.e. PostGIS, MySQL, Oracle spatial, etc.)
FAGI-gis FAGI is an application for fusing geospatial RDF data. It offers a set of 15 fusion actions that is constantly extended, as well as functionality for fusing property chains and for fusing m-to-n properties. It is available as user interactive mode and as batch processing tool, allowing the fusion of millions of triples in a few minutes.
Mappify Mappify is a web application to easily create map views displaying concept based points of interest. It enables users to easily create own individual map views combining the presentation of different custom points of interest on one map and exporting those views in HTML/JavaScript snippets
Coevolution Evolution and Repair
GEM Geospatial-semantic Exploration on the Mobile devices
RDFUnit Quality assessment tool assessment tool following the Test-Driven Data Quality Methodology. It can be used as command line tool, via the RDFUnit web interface or as library component in other applications
VirtuosoThe Virtuoso triple store improves performance by employing column-store technology, dynamic query optimisation, adaptive caching of joins, optimised graph processing and cluster/cloud scalability. Moreover, it supports handling of points, and several complex operations involving geometries (e.g. lines, polygons).
Coevolution A service for managing private and public dataset provenance and evolution
ESTA-LD Exploratory Spatio-Temporal Analysis of Linked Data based on the Data Cube Vocabulary standard

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News

GeoKnow Research Contributions ( 2015-11-30T11:46:24+01:00 Alejandra Garcia Rojas)

2015-11-30T11:46:24+01:00 Alejandra Garcia Rojas

Geospatial information extraction and management One of the main contributions of GeoKnow was to take geospatial data out of GIS for making it accessible on the web. Read more about "GeoKnow Research Contributions"

EDF2015 and Linked Data Europe: Big Geospatial Data Workshop ( 2015-11-24T23:46:33+01:00 Alejandra Garcia Rojas)

2015-11-24T23:46:33+01:00 Alejandra Garcia Rojas

In 2015, the European Data Forum took place in Luxembourg on the 16th and 17th November. GeoKnow team had the pleasure to be present at the event with a booth for showing GeoKnow results. The conference welcomed over 700 participants from industry, research, policy makers, and community initiatives form all over Europe. Read more about "EDF2015 and Linked Data Europe: Big Geospatial Data Workshop"

Linked Open Data Switzerland at SWBI2015 ( 2015-10-12T09:56:15+02:00 Daniel Hladky)

2015-10-12T09:56:15+02:00 Daniel Hladky

Daniel Hladky from Ontos presented GeoKnow at the SWBI2015 conference two talks. The first talk was the keynote on October 7, 2015 with the title “Linked Data Service (LINDAS): Status quo of the Linked Data life-cycle and lessons learned“. Read more about "Linked Open Data Switzerland at SWBI2015"

FAGI-gis: fusing geospatial RDF data ( 2015-10-05T13:08:20+02:00 Giorgos Giannopoulos)

2015-10-05T13:08:20+02:00 Giorgos Giannopoulos

GeoKnow introduces the latest version of FAGI-gis, a framework for fusing Linked Data, that focuses on the geospatial properties of the linked entities. Read more about "FAGI-gis: fusing geospatial RDF data"

GeoKnow Public Datasets ( 2015-09-19T16:15:29+02:00 Alejandra Garcia Rojas)

2015-09-19T16:15:29+02:00 Alejandra Garcia Rojas

In this blogpost we want to present three public datasets that were improved/created in GeoKnow project. LinkedGeoData Size: 177GB zipped turtle file URL: http://linkedgeodata.org/ LinkedGeoData is the RDF version of Open Street Map (OSM), which covers the entire planet geospatial data information. Read more about "GeoKnow Public Datasets"