The 15th International World Wide Web Conference (WWW2006) / Edinburgh, 26th May 2006

1. Semantic Web 2.0: Creating Social Semantic Information Spaces John Breslin, Stefan Decker {john.breslin, stefan.decker}@deri.org http://sw.deri.org/~jbreslin/ http://www.stefandecker.org/ WWW2006 Tutorial Edinburgh, 26 th May 2006

2. 0. Overview of this tutorial Semantic Web 2.0: Creating Social Semantic Information Spaces

10. 1. State of the Art in Semantic Web Semantic Web 2.0: Creating Social Semantic Information Spaces

12. Where are we in the “Semantic Web layer cake”? You Are Here!

26. 2. The Path Ahead for Social Semantic Information Spaces Semantic Web 2.0: Creating Social Semantic Information Spaces

30. From Web 1.0 to 2.0 (updated from O’Reilly) Tagging, Folksonomies Directories, Taxonomies Knowledge Syndication Stickiness Referencing BitTorrent, P2P Akamai Content Upcoming.org Evite Events Wikipedia Britannica Online Encyclopedi æ Skype, Asterisk Netmeeting Talk Google Services, AJAX, Flock Netscape, Internet Explorer Platforms Wikis Content Management Systems Portals Blogs Personal Websites Web Pages Web 2.0 Web 1.0

31. Elements of Web 2.0 (from Dion Hinchcliffe)

34. Searching using folksonomies

35. Metaweb  social semantic information spaces

36. From Web 1.0 to Semantic Web 2.0 Semantic Social Networks Online Social Networks Buddy Lists, Address Books Semantic Social Information Spaces … … Semantic Digital Libraries Google Scholar, Book Search CiteSeer, Project Gutenberg Semantic Forums and Community Portals Community Portals Message Boards Semantic Blogs Blogs Personal Websites Semantic Search Google Personalised, DumbFind Altavista, Google Semantic Wikis Wikis Content Management Systems Semantic Web 2.0 Web 2.0 Web 1.0

40. Social semantic information spaces: SW 2.0 Web 2.0 and social software

41. 3. From Blogging to Semantic Blogging Semantic Web 2.0: Creating Social Semantic Information Spaces

54. Tags propagate to RSS feeds

55. Tags and related tags across blogs

59. Structured blogging using WordPress

65. Releasing your data to the Web scenario Ina John Ina‘s Computer John‘s Computer Blog Post Blog Post Blog Post Blog Post Metadata Metadata Metadata writes Post annotates Post publishes Post reads Post imports metadata Web

70. Creating a semantic blog post with semiBlog Annotating a blog entry with an address book entry. < foaf:Person rdf:ID=&quot;andreas&quot;> < foaf:homepage > http://sw.bla.org/~aharth/</ foaf:homepage > < foaf:surname >Harth</ foaf:surname > < foaf:firstName >Andreas</ foaf:firstName > <!-- ... more properties ... --> < rdf:value >Andreas Harth</ rdf:value > </ foaf:Person >

71. External Applications (Address Book, Calendar, etc.) Publishing semiBlog architecture overview

74. Semantic blogging with Haystack (1)

75. Semantic blogging with Haystack (2)

77. Semblog publishing platform

78. Semblog publishing platform (2)

84. 4. From Wikis to Semantic Wikis Semantic Web 2.0: Creating Social Semantic Information Spaces

92. From wikis to semantic wikis: the “sweet spot”

94. Platypus semantic wiki A page per resource Current resource as object Current resource as subject Metadata is explicitly added separately from the text content (using N3 or RDF/XML)

95. Semantic MediaWiki

97. Content and structural metadata in semantic wikis

98. Information reuse

101. 5. Semantic Search Semantic Web 2.0: Creating Social Semantic Information Spaces

107. rdfs:seeAlso link graph

109. 6. Semantics in Digital Libraries Semantic Web 2.0: Creating Social Semantic Information Spaces

113. Longwell demonstration

114. Step 1: Getting started (Scenario by Stephen J. Garland & Mick Bass) 3 OCW courses Let’s start by clicking here Facets for browsing 787 OCW resources 2384 ARTstor resources

115. Step 2: Exploring one collection Let’s click to focus on an early abstract artist 137 images on island

116. Step 3: Pausing to think Narrow focus raises questions: What else did Gorky do? Who was doing similar work? Let’s click to find out more about Gorky by removing a restriction

117. Step 4: Redirecting the search Two islands in view now, linked by Gorky bridge Let’s click to cross bridge

118. Step 5: Exploring a second collection

120. Information management in JeromeDL

121. IR architecture in JeromeDL Fulltext Index FOAFRealm Repository Structure Repository MarcOnt Repository Resources’ Content (typed) keywords RDF Query OpenSearch RSS collaborative filtering local interface distributed interface types translation semantic query expansion RDF Repositories Secure Snapshot

123. Example of social semantic collaborative filtering foaf:knows xfoaf:include xfoaf:bookmark

128. 7. Semantics in Community Portals Semantic Web 2.0: Creating Social Semantic Information Spaces

133. What is SIOC? (1)

135. The main concepts in SIOC

136. How does it work?

139. Sample SIOC export from WordPress

140. Browsing SIOC (or other RDF) with Piggy Bank

144. BoardTracker, a “Technorati” for forums

145. Argumentative discussion topics similar to IBIS

147. 8. Realising the Memex and NLS: From the Desktop and Web to Social Semantic Information Spaces Semantic Web 2.0: Creating Social Semantic Information Spaces

150. Reali sing social semantic information spaces: The f irst s ociety- s cale s emantic w eb a pplication Ontology-Driven Distributed Social Networking Ontology-Driven Social Networking Semantic Desktop Social Semantic Information Spaces P2P Networks Semantic Web Semantic P2P Social Networking Phase 1 Phase 2 Phase 3 Memex (Vannevar Bush) A memex is “a device in which an individual stores all his books, records, and communications.” Open Hypertext System (Doug Engelbart) “The open hyperdocument system (OHS) is a standards-based, open source framework for developing collaborative, knowledge management applications.” WWW (Tim Berners-Lee) “There was a second part of the dream […] we could then use computers to help us analyse it, make sense of what we re doing, where we individually fit in, and how we can better work together.” Today necessary technologies & communities exist: Standardised metadata: Semantic Web Scalable distributed infrastructure: P2P Computing Knowledge articulation and interaction: Desktop Technology Processing of unstructured and legacy information: NLP Human centric information exchange: Online Social Networks Driven by today's needs, in the spirit of seminal visions Challenge: Extension & merging of research streams NLP Desktop / Web Inspired by sociological perspectives: On group forming: Viral c ommunication (Reed) On innovative IT-based interaction and feedback: Social translucent systems (Erickson and Kellogg) Smart Mobs (Rheingold) On network modeling and algorithms: Social network research Small world properties Power law distribution (Barabasi and Huberman) Link-based authority algorithms, recommender algorithms (Perugini)