A gentle introduction to riese


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Introduces riese, the 'RDFizing and Interlinking the EuroStat Data Set Effort' in a couple of minutes.

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A gentle introduction to riese

  1. 1. Institute of Information Systems & Information Management riese – R DFizing & I nterlinking the E uro S tat Dataset E ffort Wolfgang Halb (JOANNEUM RESEARCH), Yves Raimond (Queen Mary University of London) and Michael Hausenblas (JOANNEUM RESEARCH) 2008-01-30
  2. 2. Agenda <ul><li>LinkingOpenData </li></ul><ul><li>Eurostat ( http://ec.europa.eu/eurostat ) </li></ul><ul><li>Architecture </li></ul><ul><li>Schema & Data </li></ul><ul><li>Demo </li></ul><ul><li>Inside </li></ul>
  3. 3. LinkingOpenData: Principles <ul><li>Items should be identified using URI references [ URIrefs ] (and: don’t use bNodes ); </li></ul><ul><li>URIrefs should be dereferenceable: using HTTP URIs allows looking up the items identified through URIrefs, cf. [ http-range-14 TAG finding ]; </li></ul><ul><li>Looking up an URIref it leads to more data [ follow-your-nose principle ]; </li></ul><ul><li>Links to other URIrefs should be included in order to enable the discovery of more data [ How to Publish Linked Data on the Web ] </li></ul>
  4. 4. LinkingOpenData: Current State
  5. 5. LinkingOpenData: Current State <ul><li>in less than a year an emerging community (cf. [ LOD ESWiki ] </li></ul><ul><ul><li>created approx. 4 billion triples and approx. 3 million interlinks in 25 separate data sets </li></ul></ul><ul><ul><li>held diverse F2F meetings, presentations, etc. </li></ul></ul><ul><ul><li>upcoming: LDOW08 workshop at WWW08 </li></ul></ul>
  6. 6. Eurostat <ul><li>Eurostat ( http://ec.europa.eu/eurostat ) </li></ul><ul><li>publishes statistics in these themes: </li></ul><ul><ul><li>General and regional statistics </li></ul></ul><ul><ul><li>Economy and finance </li></ul></ul><ul><ul><li>Population and social conditions </li></ul></ul><ul><ul><li>Industry, trade and services </li></ul></ul><ul><ul><li>Agriculture and fisheries </li></ul></ul><ul><ul><li>External trade </li></ul></ul><ul><ul><li>Transport </li></ul></ul><ul><ul><li>Environment and energy </li></ul></ul><ul><ul><li>Science and technology </li></ul></ul><ul><li>about the European Union in detail and additional statistics for major non-European countries </li></ul>
  7. 7. Eurostat <ul><li>data dump provided as download (TSV-files) </li></ul><ul><li>updated twice a day </li></ul><ul><li>additionally needed: </li></ul><ul><ul><li>dictionary files to translate the data codes used </li></ul></ul><ul><ul><li>table of contents for structure </li></ul></ul><ul><li>Size of Eurostat data </li></ul><ul><ul><li>5 GB data dump in approx. 4,000 files </li></ul></ul><ul><ul><li>350 million data values </li></ul></ul><ul><ul><li>80,000 different data codes </li></ul></ul>
  8. 8. riese: architecture
  9. 9. riese: schema & data
  10. 10. riese: schema & data <ul><li>3 billion triples generated </li></ul><ul><li>Example data: </li></ul><ul><li><riese:Dataset rdf:about=&quot;http://riese.joanneum.at/data/eb040&quot; </li></ul><ul><li>dc:title=&quot;Inflation rate&quot; </li></ul><ul><li>riese:data_end=&quot;2006&quot; </li></ul><ul><li>riese:data_start=&quot;1980&quot; </li></ul><ul><li>riese:last_update=&quot;08/01/2008“/> </li></ul>
  11. 11. riese: schema & data <ul><li><riese:Item dc:title=“Inflation rate Austria 2006&quot; </li></ul><ul><li>rdf:value=“1.7&quot; </li></ul><ul><li><riese:dimension rdf:resource= &quot;http://riese.joanneum.at/dimension/geo/at&quot;/> </li></ul><ul><li><riese:dimension rdf:resource= &quot;http://riese.joanneum.at/dimension/time/2006&quot;/> </li></ul><ul><li><riese:dataset rdf:resource= &quot;http://riese.joanneum.at/dat/eb040&quot;/> </li></ul><ul><li></riese:Item> </li></ul>
  12. 12. riese: schema & data <ul><li>XHTML + RDFa example: </li></ul><ul><li><?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?> </li></ul><ul><li><!DOCTYPE html PUBLIC &quot;-//W3C//DTD XHTML+RDFa 1.0//EN&quot; &quot;http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd&quot;> </li></ul><ul><li><html xmlns=&quot;http://www.w3.org/1999/xhtml&quot; xml:lang=&quot;en&quot; </li></ul><ul><li>xmlns:riese=&quot;http://riese.joanneum.at/schema/core#&quot; </li></ul><ul><li>... </li></ul><ul><li>> </li></ul><ul><li><head> </li></ul><ul><li>... </li></ul><ul><li></head> </li></ul><ul><li><body about=&quot;http://riese.joanneum.at/data/economy/&quot; instanceof=&quot;riese:Dataset&quot; > </li></ul><ul><li><span class=&quot;toc-entry&quot;><a href=&quot;http://riese.joanneum.at/data/bop/&quot; rel=&quot;skos:narrower&quot; class=&quot;dim&quot;>Balance of payments - International transactions</a></span> </li></ul><ul><li>Last update: <span property=&quot;dc:date&quot; datatype=&quot;xsd:date&quot; >2008-01-09</span> </li></ul><ul><li></body> </li></ul><ul><li></html> </li></ul>
  13. 13. riese: demo
  14. 14. riese: inside <ul><li>Server: </li></ul><ul><ul><li>Apache 2.2 </li></ul></ul><ul><ul><li>SWI- Prolog </li></ul></ul><ul><ul><li>PHP 5 </li></ul></ul><ul><ul><li>RDF/XML documents in the file system </li></ul></ul><ul><li>Client </li></ul><ul><ul><li>XHTML+RDFa </li></ul></ul><ul><ul><li>Javascript/Yahoo! Interface Library [ YUI ] </li></ul></ul>
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