1. Map4rdf - Faceted Browser for
Geospatial Datasets
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
WorkdistributedunderthelicenseCreativeCommonsAttribution-
Noncommercial-Share Alike 3.0

2. ToC
• Motivation
• Map4rdf overview
• Use cases
• Conclusions and future work
2

3. Motivation
Effective usage, develop applications that exploit these data
Streaming resources
3

4. Motivation
Linked Open Data Cloud
4

5. ToC
• Motivation
• Map4rdf overview
• Use cases
• Conclusions and future work
5

6. Overview
• Faceted browsing tool for exploring and visualizing
RDF datasets enhanced with geospatial information.
map4rdf SPARQL
Triplestore
http://oegdev.dia.fi.upm.es/projects/map4rdf/
http://github.com/pejot/linkeddata-visualization-tools/
6

7. Basic architecture
Web*Client* Faceted*Browsing**
Interface*
Event*Bus*
Invoker*
Command*A* Command*B* Command*C* Command*D* Command*E*
Web*Server* Dispatch*Servlet*
Command* Command* Command* Command* Command*
Handler*A* Handler*B* Handler*C* Handler*D* Handler*E*
Data*Access*Object*(DAO)*
SPARQL*Endpoint*
Triplestore*
7

8. Geospatial model
• Model used by DBPedia http://www.w3.org/2005/Incubator/geo/
40.41
geo:lat
dbpedia:Madrid
geo:long
-3.70
• GeoLinkedData Geometry Model, NeoGeo Vocab
http://geo.linkeddata.es/web/guest/modelos
http://geovocab.org/doc/neogeo/
geo:Point
geo:lat 40.41
rdf:type
geo:geometry
geoes:Madrid geoes:wgs84/40.41_-3.70
geo:long
-3.70
8

9. Geospatial model - more complex geometries
geoes:ontology/LineString
rdf:type
geo:geometry
geoes:Ebro geoes:resource/7979707
geoes:ontology/formedBy
geoes:ontology/formedBy
geoes:wsg84/0.67_45.3
… geoes:wsg84/0.45_45.4 geo:Point
geo:lat geo:long geo:lat geo:long
40.41 -3.70 40.41 -3.70
9

10. Google Maps
10

11. OpenStreetMap
11

12. Open Layers Map
12

13. Catalogue Service Web
• 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
13

14. Complex geometries
14

15. Suggestions of Editions / Data curation
• For example, let us assume that the resource that
represents the Murcia Airport has not the correct
information.
15

16. ToC
• Motivation
• Map4rdf overview
• Use cases
• Conclusions and future work
16

17. GeoLinkedData
• 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/
17

18. Provinces
18

19. Integrate data coming from the Statistical Institute
19

20. Provinces – Industry Production Index
Specific visualizations for datasets based on SCOVO and RDF Data Cube
http://vocab.deri.ie/scovo
http://www.w3.org/TR/vocab-data-cube/
20

21. 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

22. Weather stations
11/02/11
22

23. Observations for each station
11/02/11
23

24. A particular observation
Specific visualizations for datasets based on SSN Ontology – ongoing work
http://www.w3.org/2005/Incubator/ssn/ssnx/ssn
11/02/11
24

25. ToC
• Motivation
• Map4rdf overview
• Use cases
• Conclusions and future work
25

26. 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

28. Map4rdf - Faceted Browser for
Geospatial Datasets
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
WorkdistributedunderthelicenseCreativeCommonsAttribution-
Noncommercial-Share Alike 3.0