Semantic Mashups with Wandora


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Wandora is a general purpose Topic Maps editor application with a vast collection of information extractors. Extractors enable Wandora user to aggregate information from various open data sources. In this hands-on tutorial participants are shown how to create and publish multidimensional information mashups with Wandora and open data sources such as GeoNames and YouTube.

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Semantic Mashups with Wandora

  1. 1. Wandora Workshop Grip Studios Interactive, Aki Kivelä TMRA 2009 Tutorial 11.11.2009 (edited 10.2.2010)
  2. 2. Outline of Workshop Getting started What is Wandora? Hands-on! Trying Wandora's features Creating Leipzig Mashup  Dbpedia, Flickr, GeoNames, RSS, YouTube, OpenCalais, AlchemyAPI etc.  To make mashup creation smooth, get yourself an accout for Flickr and YouTube at least 2
  3. 3. Wandora First version in 2001 Indexing and publishing the digitized artwork collection in The Museum of Contemporary Art Kiasma Further development along the years in various projects Finnish National Gallery Art Collections online (2007) 33711 artworks (of which14638 with images) >130000 topics and >500000 associations 3
  4. 4. KIASMART (2001) Town Again (2005) Finnish National Gallery Collections (2007) 4
  5. 5. Wandora Special WWW publishing projects using Topic Maps → General purpose Topic Maps editor application Important people: Marko Wallgren, Pasi Hytönen, Olli Lyytinen, and Aki Kivelä Grip Studios Interactive Oy 5
  6. 6. Wandora Today Desktop Java (Swing) application General purpose Topic Maps editor Distributed under GPL License Many specialized tools for data importing and bulk processing Embedded HTTP server Still a work in progress!! 6
  7. 7. Wandora's Philosophy Developer centric Pragmatic Always beta Motto: Giving the information back to the people! 7
  8. 8. Topic Maps in Wandora Wandora uses a slightly reduced version of topic maps. Standard topic maps have some features not supported in Wandora Most important restrictions: Only one base name, Restrictions with scope usage, Each association player must have a different role, No reification 8
  9. 9. Getting Wandora Requires Java Runtime Environment (Java SE 6) Download Wandora from Unzip the package somewhere Start Wandora.exe or one of the startup scripts in bin folder 9
  10. 10. 10
  11. 11. Wandora Basics Topic tree navigator on the left side Customizable, can make several trees Opened topic fills most of the screen Double click on topics to open them Type in fields to edit values Use menus do other tasks Right mouse button → Context menu Layers at lower left corner 11
  12. 12. Merging in Topic Maps Topic Maps specify clear topic merging rules If two topics have same subject locator, subject identifier or same base name they are the same topic Makes it possible to merge several topic maps into a larger topic map Also need to be careful not to accidentally merge topics!!!!!! 12
  13. 13. Topic Map Layers In Wandora you can organize your data in several topic maps arranged in a layer stack Keep different kinds of data separate Manage data visibility Data can come from different source In the editor, and when publishing, the layers will look like one big merged topic map 13
  14. 14. Hands-on! We're going to build a Leipzig themed information mashup Gather as much information as possible using Wandora's extractors: Flickr, YouTube, Dbpedia, etc. Merge topics representing same subject View results in Wandora and web browser 14
  15. 15. Hands-on! Example raw XTMs for mashup are available at other/tmra09/ 15
  16. 16. Thank you for your participation 16