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Ecuadorian Geospatial Linked Data

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Information about Ecuadorian Geospatial Linked Data
Technology

Published on March 6, 2014

Author: boricles

Source: slideshare.net

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Ecuadorian Geospatial Linked Data
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KDrive Ecuadorian Geospatial Linked Data Victor Saquicela1, Mauricio Espinoza1, Nelson Piedra2, and Boris Villazón-Terrazas3 Universidad de Cuenca, Ecuador {victor.saquicela,mauricio.espinoza}@ucuenca.edu.ec 2 Universidad Técnica Particular de Loja, Ecuador nopiedra@utpl.edu.ec 3 Intelligent Software Components, iSOCO bvillazon@isoco.com @boricles http://www.slideshare.net/boricles 1

ToC » Motivation » Architecture » Geospatial Linked Data Life Cycle 2

Motivation http://datosenlazados.org/cms/ http://linkeddata.ec/ 3

Architecture 4

Geospatial Linked Data Life Cycle Taking into account geospatial component •  Selection of geospatial data sources •  URIs for geospatial resources •  Geospatial Vocabularies •  RDF generation for the geospatial data •  Linking of geospatial data Boris Villazon-Terrazas, Luis Vilches, Asunción Gómez-Pérez, and Oscar Corcho Methodological Guidelines for Publishing Linked Data. http://link.springer.com/chapter/10.1007/978-1-4614-1767-5_2 5

Selection of the data sources •  Identify and select geospatial resources from Ecuadorian Government Agencies. •  Geo-databases •  Shapefiles •  Spreadsheets •  KML 6

URIs for Geospatial Resources •  General guidelines -  -  -  -  -  •  BP for publishing LD http://www.w3.org/TR/ld-bp/ URIs for UK Public sector https://www.gov.uk/government/publications/designing-uri-sets-for-the-uk-public-sector Study of persistent URIs http://philarcher.org/diary/2013/uripersistence/ Guidelines for Naming and Labeling Ontologies http://dcevents.dublincore.org/IntConf/dc-2011/paper/download/47/15 …. Geospatial specific guidelines -  -  -  -  -  RFC5870 URI for geospatial locations http://tools.ietf.org/search/rfc5870 INSPIRE http://inspire.jrc.ec.europa.eu/events/conferences/inspire_2012/presentations/ds1/ Clements%20Portele.pdf https://www.deri.ie/content/applying-design-patterns-uri-strategies-naming-linked-geospatialdata-infrastructure http://inspire-forum.jrc.ec.europa.eu/pg/forum/topic/29922/cool-uris-for-linked-geospatialdata/ … 7

Geospatial Vocabularies •  NeoGeo http://geovocab.org/doc/neogeo/ •  GeoSPARQL http://www.opengeospatial.org/standards/geosparql •  ISA Programme Location Core Vocabulary •  schema.org http://schema.org/ -  -  -  http://schema.org/Place http://schema.org/GeoShape http://schema.org/GeoCoordinates •  Place GeoShape GeoCoordinates http://www.w3.org/ns/locn ISO-19115 Ontology https://www.seegrid.csiro.au/subversion/xmml/metadata/ISO19115/iso-19115.owl … 8

Geospatial Vocabularies •  Some discussions -  Geometry separated from the feature -  Represent geometry as RDF Literal -  Represent CRS as a property. -  URIs for the CRSs, e.g., http://geovocab.org/crs/EPSG4979 -  Multilinguality 9

RDF Generation for the Geospatial Data •  GeoKettle -  -  Spatially-enabled version of the generic ETL tool, Kettle (Pentaho Data Integration) Powerful, metadata-driven spatial ETL tool dedicates to the integration of different geospatial data resources Transform Extract Load RDF Generator Plugins Image taken from http://www.spatialytics.org/projects/geokettle/ 10

RDF Generation for the Geospatial Data Reading shape files SRS Transformation RDF Generation 11

Linking of Geospatial Data ‪http://wifo5-03.informatik.uni-mannheim.de/bizer/silk/ 12

Publication and Exploitation Rivers of the province of Guayas PREFIX geo: <http://www.opengis.net/ont/geosparql#> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX geof: <http://www.opengis.net/def/function/geosparql/> PREFIX sf: <http://www.opengis.net/ont/sf#> PREFIX units: <http://www.opengis.net/def/uom/OGC/1.0/> SELECT distinct ?r ?label ?Figure ?r2 ?Figure2 WHERE { ?r rdf:type <http://geo.linkeddata.ec/ontology/riosdobles_promsa>. ?r rdfs:label ?label. ?r geo:hasGeometry ?geo. ?geo rdf:type ?geoType . ?geo geo:asWKT ?Figure. http://purl.org/Ecuador/geo/sparql SPARQL ?r2 rdf:type <http://geo.linkeddata.ec/ontology/provincias_promsa>. ?r2 rdfs:label "GUAYAS"@es. ?r2 geo:hasGeometry ?geo2. ?geo2 rdf:type ?geoType2 . ?geo2 geo:asWKT ?Figure2. FILTER (geof:sfIntersects(?Figure2, ?Figure)). } Parliament 13

Publication and Exploitation Rivers of the province of Guayas PREFIX geo: <http://www.opengis.net/ont/geosparql#> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX geof: <http://www.opengis.net/def/function/geosparql/> PREFIX sf: <http://www.opengis.net/ont/sf#> PREFIX units: <http://www.opengis.net/def/uom/OGC/1.0/> SELECT distinct ?r ?label ?Figure ?r2 ?Figure2 WHERE { ?r a <http://geo.linkeddata.ec/ontology/riosdobles_promsa>. ?r rdfs:label ?label. ?r geo:hasGeometry ?geo. ?geo rdf:type ?geoType . ?geo geo:asWKT ?Figure. ?r2 a <http://geo.linkeddata.ec/ontology/provincias_promsa>. ?r2 rdfs:label "GUAYAS"@es. ?r2 geo:hasGeometry ?geo2. ?geo2 rdf:type ?geoType2 . ?geo2 geo:asWKT ?Figure2. FILTER (geof:sfIntersects(?Figure2, ?Figure)). } SPARQL http://200.0.31.28:8081/map4rdf-0.0.4-OL-SNAPSHOT/#dashboard Parliament 14

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KDrive Ecuadorian Geospatial Linked Data Victor Saquicela1, Mauricio Espinoza1, Nelson Piedra2, and Boris Villazón-Terrazas3 Universidad de Cuenca, Ecuador {victor.saquicela,mauricio.espinoza}@ucuenca.edu.ec 2 Universidad Técnica Particular de Loja, Ecuador nopiedra@utpl.edu.ec 3 Intelligent Software Components, iSOCO bvillazon@isoco.com @boricles http://www.slideshare.net/boricles 1

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