Map4rdf - Faceted Browser for Geospatial Datasets

WorkdistributedunderthelicenseCreativeCommonsAttribution-Noncommercial-Share Alike 3.0

Alexander de León, Filip Wisniewki, Boris Villazón-Terrazas, Oscar Corcho Facultad de Informática, Universidad Politécnica de Madrid

Campus de Montegancedo sn, 28660 Boadilla del Monte, Madrid http://www.oeg-upm.net

bvillazon@fi.upm.es Phone: 34.91.3366605, Fax: 34.91.3524819

@boricles Slides available at: http://www.slideshare.net/boricles/

Acknowledgements: Daniel Garijo, Victor Saquicela, Asunción Gómez-Pérez, Luis M. Vilches, and all OEG members involved in the Linked Data initiatives

ToC

•  Motivation

•  Map4rdf overview

•  Use cases

•  Conclusions and future work

2

Effective usage, develop applications that exploit these data

3

Streaming resources

Motivation

Linked Open Data Cloud

4

Motivation

ToC

•  Motivation

•  Map4rdf overview

•  Use cases

•  Conclusions and future work

5

Overview

•  Faceted browsing tool for exploring and visualizing RDF datasets enhanced with geospatial information.

6

map4rdf SPARQL

Triplestore

http://oegdev.dia.fi.upm.es/projects/map4rdf/ http://github.com/pejot/linkeddata-visualization-tools/

Basic architecture

7

Triplestore*

Web*Server*

SPARQL*Endpoint*

Web*Client* Faceted*Browsing**Interface*

Command*A* Command*B* Command*C* Command*D* Command*E*

Invoker*

Event*Bus*

Dispatch*Servlet*

Command*Handler*A*

Command*Handler*B*

Command*Handler*C*

Command*Handler*D*

Command*Handler*E*

Data*Access*Object*(DAO)*

Geospatial model

8

•  Model used by DBPedia http://www.w3.org/2005/Incubator/geo/

dbpedia:Madrid

40.41

geo:lat

geo:long

-3.70

•  GeoLinkedData Geometry Model, NeoGeo Vocab http://geo.linkeddata.es/web/guest/modelos http://geovocab.org/doc/neogeo/

geoes:Madrid geoes:wgs84/40.41_-3.70 geo:geometry

40.41

-3.70

geo:lat

geo:long

geo:Point

rdf:type

Geospatial model - more complex geometries

9

geoes:Ebro geoes:resource/7979707 geo:geometry

40.41 -3.70

geo:lat geo:long

geoes:wsg84/0.45_45.4

geoes:ontology/formedBy

geoes:wsg84/0.67_45.3

40.41 -3.70

geo:lat geo:long

geo:Point

geoes:ontology/LineString

rdf:type

geoes:ontology/formedBy

…

Google Maps

10

OpenStreetMap

11

Open Layers Map

12

Catalogue Service Web

13

•  http://www.idee.es/csw-inspire-idee/srv/en/main.home •  http://www.idee.es/csw-inspire-idee/servicio

•  Also we can include any other WMS service

Complex geometries

14

Suggestions of Editions / Data curation

•  For example, let us assume that the resource that represents the Murcia Airport has not the correct information.

15

ToC

•  Motivation

•  Map4rdf overview

•  Use cases

•  Conclusions and future work

16

GeoLinkedData

17

•  An open initiative whose aim is to enrich the Web of Data with Spanish geospatial data

•  It started off by publishing diverse information sources, such as National Geographic Institute of Spain (IGN) and Statistical Institue of Spain (INE).

•  http://geo.linkeddata.es/

Provinces

18

Integrate data coming from the Statistical Institute

19

Provinces – Industry Production Index

20

Specific visualizations for datasets based on SCOVO and RDF Data Cube

http://vocab.deri.ie/scovo http://www.w3.org/TR/vocab-data-cube/

Meteorological Linked Data - AEMET

•  AEMET, Spanish Meteorological Office, data

•  Meteorological data registered by its weather stations, radars, lightning detectors and ozone soundings.

•  http://aemet.linkeddata.es/

21

Weather stations

11/02/11

22

Observations for each station

11/02/11

23

A particular observation

11/02/11

Specific visualizations for datasets based on SSN Ontology – ongoing work

http://www.w3.org/2005/Incubator/ssn/ssnx/ssn

24

ToC

•  Motivation

•  Map4rdf overview

•  Use cases

•  Conclusions and future work

25

Conclusions

•  map4rdf for exploring and visualizing RDF datasets.

•  Easy to configure, use and extend

•  It is also used in El Viajero, an application for exploiting, managing and organizing Linked Data in the domain of news and blogs about traveling

http://webenemasuno.linkeddata.es/index_en.html

•  Future work

•  Improve facets visualization •  Include more visualizations for specific vocabularies

26

Map4rdf - Faceted Browser for Geospatial Datasets

WorkdistributedunderthelicenseCreativeCommonsAttribution-Noncommercial-Share Alike 3.0

Alexander de León, Filip Wisniewki, Boris Villazón-Terrazas, Oscar Corcho Facultad de Informática, Universidad Politécnica de Madrid

Campus de Montegancedo sn, 28660 Boadilla del Monte, Madrid http://www.oeg-upm.net

bvillazon@fi.upm.es Phone: 34.91.3366605, Fax: 34.91.3524819

@boricles Slides available at: http://www.slideshare.net/boricles/

Acknowledgements: Daniel Garijo, Victor Saquicela, Asunción Gómez-Pérez, Luis M. Vilches, and all OEG members involved in the Linked Data initiatives