1. A Short Tutorial to Semantic Media Wiki (SMW) [[date:: July 21, 2009 ]] At [[part of:: Web Science Summer Research Week ]] By [[has speaker:: Jie Bao ]] and [[has speaker:: Li Ding ]] [[Category:Tutorial]] 1

2. 2 #1 What is SMW? #2 Editing #3 Browsing #4 Using Semantics #5 Example Apps #6 Additional Resources Outline

3. 3 #1: What is SMW? An extension to MediaWiki – the wiki engine that powers Wikipedia Allows semantic annotation –Category: a group of things Student, Event, Talk –Property: relation between two things “A Short Tutorial to Semantic Media Wiki (SMW)” has speaker “Jie Bao” SummerProgram2009 costs $950

4. SMW is A wiki: simple, collaborative Semantic Web in the small A light-weight semantic database A platform to build other apps … 4

5. Exercise Wiki http://tw.rpi.edu/portal/SummerProgram2009 (please create an account and log in) 5

6. 6 #2: Editing

7. Create A New Page Click the “red links” How to get the red links? –Search “A new page” in search box, or –Add “[[A new page]]” on some existent page 7

8. 8 Non-semantic syntax Click “edit” tab to enter the editing page Simple MediaWiki formatting syntax: Headings of different levels==heading== ===level 1=== Bullet list* first * second Numbered list# one # two Link to another page on the wiki [[pagename]] Link to another page on the wiki, but show different text [[pagename|show_text]]

9. 9 Semantic Annotation Syntax DescriptionSyntaxExample Assign a page to a category [[Category:categoryname]][[Category:Talk]] Add a property (with value) to a page [[propertyname::value]][[date::July 21, 2009]] Add a property (with value) to a page, but show “show_value” [[propertyname::value|sh ow_value]] [[date::July 21, 2009|21st July]] Categories and properties are also wiki pages Category:Talk Property:date

10. Advanced Topics (not covered here) Inline queries Semantic templates and forms Importing and exporting data Graphic user interface (Halo extension) Many more extensions… More on http://semantic-mediawiki.org/wiki/Help:SMW_extensions 10

11. Exercise Write something about yourself: http://tw.rpi.edu/portal/SummerProgram2009 11

12. 12 #3: Browsing Methods for browsing the regular wiki –Similar to browsing a website –Some links specific to the wiki “what links here” in the toolbox sidebar Methods for browsing the annotated data –Factbox –Property links to property pages –Category links to category pages –Semantic browsing

13. 13 Browsing - Track changes Track changes on the whole Wiki –use “Recent changes” in the navigation sidebar Track changes on one wiki page –use the “history” tab Track changes on pages related to one wiki page –Use the “Related changes” in the toolbox sidebar Track semantic changes of triples (an extension) –Example: http://tw.rpi.edu/semhis

14. 14 #4: Using Semantics

15. For End Users Improved Semantic Data Generation Before –Use RDF syntax –Use Editor After –From structured data –Use SMW syntax –Use Form <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22- rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/"> World Wide Web Consortium

16. For End Users Smart Data Propagation Data can be easily propagated via semantic query, e.g. the project and publications are included from others’ input Data can be propagated smartly using wiki-script based inference, e.g. “James A. Hendler” has an alias “Jim Hendler”

17. For Developers 17 SMW is a ready-to-use semantic web workbench

18. For Developers SMW Enables Fast Prototyping Learning Curve (before) –Web languages: HTML, CSS –Semantic web languages: RDF, RDFS, OWL, SPARQL, –Web tools: web server (apache, tomcat), database (mysql), languages (PHP, Javascript) –Semantic web tools: editor (protégé, swoop), triple store (sesame), ontology reasoners (pellet, racer), Programming API (jena), Learning Curve (after) –Wiki syntax –Semantic wiki syntax and semantic form/template syntax –Web tools hidden by Wiki –Simplified SW tools via light-weight Wiki programming: Online authoring Triple store Semantic query with simple RDFS reasoning

19. For Developers SMW is a Web-based modeling tool 19

20. 20 #5: Example Apps

21. Publication Repository 21 http://tw.rpi.edu/wiki/Publication DBLP bibtex wiki markup

22. An Ontology Editor 22  Template based OWL meta modeling with form support  Controlled natural language rendering (Rabbit, ACE, Yayan)  Limited rule inference to enhance the native RDFS inference http://tw.rpi.edu/proj/cnl

23. RPI Campus Map 23

24. #6 Additional Resources SMW site: http://semantic-mediawiki.org http://semantic-mediawiki.org A 1.5 hour video tutorial: http://videolectures.net/eswc08_vrandecic_sw/ http://videolectures.net/eswc08_vrandecic_sw/ SMW + User Forum: http://smwforum.ontoprise.com/ http://smwforum.ontoprise.com/ Tetherless World Work on SMW http://tw.rpi.edu/wiki/Semantic_Portal_Wiki http://tw.rpi.edu/wiki/Semantic_Portal_Wiki 24