MDST 3703 F10 Seminar 10

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  • Mention the Social Network – we still don’t know what this is ...
  • What is a database?

    Compare to what preceded this ... relational dbs
  • DISCUSS LA TIMES ARTICLE
    -- Remark on value of the comments – connect to Great Chain of Blogging

    WHAT IS REALLY AT STAKE IN THESE DISCUSSIONS IS AN ANCIENT SYSTEM OF PRESTIGE
  • NETWORK EFFECTS MAY OVERWHELM TRADITIONAL MODES OF ASSIGNING VALUE
  • We don’t know where this is going ....
  • Freebase is like DBPedia
    DBPedia is not meant for humans
  • It works by extracting data from Wikipedia
    Freebase also does this, but gets data from other sources, including registered users
  • Explore C’ville page with dbPeda page and then OpenLink
  • MDST 3703 F10 Seminar 10

    1. 1. Seminar 10 Wikis Introduction to the Digital Liberal Arts MDST 3703 / 7703 Fall 2010
    2. 2. Business • Any WordPress issues? • Other issues to raise?
    3. 3. Review • Blogging and RSS – The Great Chain of Blogging – Personal broadcasting meets established news • MSM = “Mainstream Media” • Are blogs useful to academics? – Not the same asking if blogs can/should/will replace the the academic essay and monograph • Our concern is with effects which are still not fully understood and evolving
    4. 4. Overview • Today we look at wikis, one of the major media genres of the web – history, form, content, function/effects • Learn to use a simple wiki • Discuss the role of wikis within the ecology of academic work • Discuss future directions of wikis
    5. 5. What is a Wiki? • A kind of web site invented by Ward Cunningham – The simplest database possible • Radical Simplicity – All pages are directly editable through the web – All versions are saved – Simple syntax, e.g. CamelCase defines a link • Now hundreds of varieties of wiki software and wiki sites
    6. 6. The first wiki: the Portland Pattern Repository http://c2.com/cgi/wiki
    7. 7. Exercise—using PHPWiki • Go to http://ontoligent.com/wiki • A PHPWiki site, based on the original wiki • Everyone create a page – On the front page, click on “MDST Student Pages” – Find your page – the ? means the page has not yet been created – Start adding content ...
    8. 8. Some Basic Syntax • CamelCase (aka WikiSyntax) creates links – When you save, new links will show a question mark – Also square brackets can be used • Image URLs surrounded by square brackets will insert images directly – e.g. [http://somewhere.com/myimage.png] • Lists are made with * or # prefixes • Headers are made with !, !!, or !!! prefixes
    9. 9. How are wikis different than blogs?
    10. 10. Wikis vs. Blogs Personal wikis, e.g. TiddlyWiki WIKIS BLOGS Collaborative Blogs, e.g. Daily Kos Individual Collective diachronicsynchronic
    11. 11. Other differences • Hypertext—wikis have more links and greater link density • Aesthetics – wikis tend to be plainer, more meat and potatoes • Metacritical—wiki lexia tend to include comments on their own condition
    12. 12. Metacritical comment
    13. 13. Are wikis useful for academic work? Both tend to be open (socially and editorially) and to oppose the culture of expertise
    14. 14. Academic Wikis • Stanford Encyclopedia of Philosophy – http://plato.stanford.edu/about.html • Arché TWiki – http://arche-wiki.st- and.ac.uk/~ahwiki/bin/view/Main/WebHome
    15. 15. Wikipedia • Best example of wiki logic (wiki culture) – Form: basic wiki – Content: encyclopedia knowledge (tertiary source) – Function/effect: ??? • Reviled (but secretly used) by academics, librarians and educators – Why the bad rep?
    16. 16. Prestige?
    17. 17. “Structures of Participation” • Media forms entail different structures of participation – Producers – Consumers – Relations between producers and consumers – Relations between producers – Relations between consumers • Think of literature, newspapers, radio, TV – The web has spawned several new media forms
    18. 18. Freebase • Consists of Topics and Relations – Everything is a topic, all topics have IDs – Topics are linked by relationship types • An attempt to build a knowledge base on top of Wikipedia. Why? – Meant to be machine readable – Wikipedia doesn’t have an API • Example of what we are building when we build Wikipedia
    19. 19. DBpedia • An attempt to reverse engineer an ontology from Wikipedia • Converts structured and extracted data from articles in Freebase-like sentences – Uses RDF • Forms a machine readable resource for semantic web applications • See http://dbpedia.org
    20. 20. RDF vs HTML • See http://dbpedia.org/page/Charlottesville • A sample data record extracted from Wikipedia • Can be viewed in a semantic web browser – E.g. OpenLink, a Firefox extension • Connects to other RDF datasets on the web – e.g. Geonames (owl:sameAs)
    21. 21. Hypertext as logical network http://mikelove.wordpress.com/2007/09/17/why-freebase-if-we-already-have-wikipedia/
    22. 22. Web 3.0
    23. 23. The Machine is Us(ing Us) People Wikipedia Facebook Twitter Semantic Web Machines (Machines are participating too)
    24. 24. Technology, Culture and Academia • Both blogs and wikis represent both a set of technologies and a set of values and principles – Blogging = personal opinion – Wikis = openness (e.g. WikiLeaks) – Both compete with traditional academic values • Two responses – Maybe academic values should change – Maybe the technologies can be “worked,” as there is no absolute requirement that culture and technology would go together
    25. 25. The Three Webs • Web 1.0 – 1991 to 1999 – HTML, Perl • Web 2.0 – 2000 to 2010 – PHP, DHTML, AJAX • Web 3.0 – 2010 to ??? -- RDF, HTML5

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