CEOS WGISS 35 - Sao Jose dos Campos, Brazil - 2013.05.07 Overview of CNES activities on semantic search

1. CNES activities on semantic search
Jérôme Gasperi
CEOS WGISS-35
INPE - Sao Paulo dos Campos, Brazil - May 7th, 2013

2. Semantic search
Linked Data
Faceted search

3. Semantic search
Help users to find the right data

4. AMMA
CYCLOPES
GEOLAND
GLOBCOVER
PARASOL
POLDER
....

5. AMMA
CYCLOPES
GEOLAND
GLOBCOVER
PARASOL
POLDER
....
Land cover
Soil moisture
Temperature
Reflectance
Vegetation
...

6. How ?

7. Tag metadata at the product level with keywords
related to the project or mission name
e.g. search for "Land cover" products instead of "GLOBCOVER"

8. Use Exogeneous data to characterize product content.
The product footprint should be use for automatic processing - e.g. toponyms extraction with OpenStreetMap

9. Example
Using Global Land Cover 2000 to automatically characterize product thematic content

10. Global Land Cover (GLC 2000)

11. Thematic sliders
SPOT cover - 1,300,000 scenes

12. Search for coastal cultivated area ?

13. Coastal cultivated area
Search results
(footprints displayed in black over the map)

14. costal...
...cultivated area
Thematic classification
is displayed within
the result metadata

15. !
https://vimeo.com/51045597

16. Linked data
Achieve multidisciplinary interoperability

17. « Linked data is the right way to do Semantic Web »
Tim Berners-Lee

18. The Graph of Idea - www.griffsgraphs.com

19. Faceted search
Break the hierarchy of search filters

20. Taxonomy search
(e.g.Yahoo! Directory)
vs.
Direct search
(e.g. google)
Web search paradigms

21. Taxonomy search
(e.g.Yahoo! Directory)
+
Direct search
(e.g. google)
Faceted search
(a sort of)

22. « Faceted search enables users to navigate a multidimensional information space by combining text search
with a progressive narrowing of choices in each dimension »
http://en.wikipedia.org/wiki/Faceted_search

23. Classification to be
ordered in multiple ways