4. Researchers working on multimedia topics in Eastern Europe.Informationis available on the Web, but opaque to current search. Why Semantic Data Web? Solution: complement text on Web pages with structured linked open data & intelligently combine/integrate such structured information from different sources: Search engine HTML HTML RDF RDF Web server Web server Web server Web server berlin.de Has everything about childcare in Berlin. Immobilienscout.de Knows all about real estate offers in Germany DB DB
13. The Long Tail of Information Domains Pictures The Long Tail by Chris Anderson (Wired, Oct. ´04) adopted to information domains Recipes News Video Calendar Popularity SemWeb supported structured content Requirements-Engineering Talentmanagement Special interest communities Itinerary ofKing George Gene sequences … … … … Currently supportedstructuredcontent types Not or insufficiently supported content types
14. 1. Uses RDF Data Model Linked Data Web Technology 14.7.2011 takesPlaceAt organizes Uni Mainz Semedia2011 Mainz takesPlaceIn 2. Is serialised in triples: UniMainzorganizes SeMedia2011 SeMedia2011 takesPlaceAt “20110714”^^xsd:date SeMedia2011 takesPlaceAtMainz 3. Uses Content-negotiation
15. The emerging Web of Data interlink 2009 2007 SILK DXX Engine fuse create 2008 poolparty SemMF OntoWiki 2008 Sigma WiQA 2008 2008 ORE repair classify Virtouso 2009 DL-Learner MonetDB Sindice enrich
23. Represents a community consensusRecently launched DBpedia Live transforms Wikipedia into a structred knowledge base Transforming Wikipedia into an Knowledge Base
24. Structure in Wikipedia Title Abstract Infoboxes Geo-coordinates Categories Images Links other language versions other Wikipedia pages To the Web Redirects Disambiguations 14.07.2011 Sören Auer - The emerging Web of Linked Data 13
25. Infobox templates Wikitext-Syntax {{Infobox Korean settlement | title = Busan Metropolitan City | img = Busan.jpg | imgcaption = A view of the [[Geumjeong]] district in Busan | hangul = 부산 광역시 ... | area_km2 = 763.46 | pop = 3635389 | popyear = 2006 | mayor = Hur Nam-sik | divs = 15 wards (Gu), 1 county (Gun) | region = [[Yeongnam]] | dialect = [[Gyeongsang]] }} http://dbpedia.org/resource/Busan dbp:Busan dbpp:title ″Busan Metropolitan City″ dbp:Busan dbpp:hangul ″부산 광역시″@Hang dbp:Busan dbpp:area_km2 ″763.46“^xsd:float dbp:Busan dbpp:pop ″3635389“^xsd:int dbp:Busan dbpp:region dbp:Yeongnam dbp:Busan dbpp:dialect dbp:Gyeongsang ... RDF representation 14.07.2011 Sören Auer - The emerging Web of Linked Data 14
26. A vast multi-lingual, multi-domain knowledge base DBpedia extraction results in: descriptions of ca. 3.4 million things (1.5 million classified in a consistent ontology, including 312,000 persons, 413,000 places, 94,000 music albums, 49,000 films, 15,000 video games, 140,000 organizations, 146,000 species, 4,600 diseases labels and abstracts for these 3.2 million things in up to 92 different languages; 1,460,000 links to images and 5,543,000 links to external web pages; 4,887,000 external links into other RDF datasets, 565,000 Wikipedia categories, and 75,000 YAGO categories altogether over 1 billion pieces of information (i.e. RDF triples): 257M from English edition, 766M from other language editions DBpedia made a substantial impact in science, technology and society DBpedia became the central interlinking hub on the Data Web Scientific publications attracted more than 500 citations More than 15.000 monthly visits on DBpedia.org,numerous press articles, blog posts … Ecosystem of commercial and community applications:ThomsonReuters, BBC, Neofonie, Openlink, Faviki … Motivates further research need wrt. scalability, quality 14.07.2011 Sören Auer - The emerging Web of Linked Data 15
47. Versatile domain-independent tool Serves as Linked Data / SPARQL endpoint on the Data Web Open-source project hosted at Google code Not just a Wiki UI, but a whole framework for the development of Semantic Web applications Developed in PHP based on the Zend framework Very active developer and user community More than 500 downloads monthly Large number of use cases Management of multimedia content for a record label in the UK OntoWiki – a semantic data wiki
48. Dynamische Sichten auf die Wissensbasis OntoWiki 14.07.2011 Sören Auer - The emerging Web of Linked Data 24
49. OntoWiki RDF-Triple auf Resourcen-Detailseite 14.07.2011 Sören Auer - The emerging Web of Linked Data 25
69. Ontology Enrichment: uses the DL-Learner framework to suggest definitions & super classes for existing classes in the KB. works if instance data is available for harmonising schema and data.http://aksw.org/Projects/ORE Enrichment & Repair
75. allows domain experts and knowledge engineers to amend the ontology structure and modify data with just a few clicks
76. Combined with RDF representation of evolution patterns and their exposure on the Linked Data Web, EvoPat facilitates the development of an evolution pattern ecosystem
78. declarative definition of bad smells and corresponding evolution patterns promotes the (semi-)automatic improvement of information quality.EvoPat – Pattern based KB Evolution
98. AKSW Data Web Building Blocks Vakantieland Building Data Web applications OntoWiki Collaborative creation of explicit knowledge via Semantic Wikis RDB2RDF Mapping relational data to RDF SoftWiki Distributed, stakeholder driven Requirements Engineering DL-Learner Machine Learning for Ontologies DBpedia “Semantification” ofWikipedia OpenResearch.org A semantic Wiki for the sciences ORE Ontology Enrichment & Repair LinkedGeoData “Semantification” of OpenStreetMaps xOperator Combining Instant Messaging with the Data Web LIMES Link Discovery Framework formetricspaces) Triplify “Semantification” of (small) Web Applications CatalogusProfessorum Prosopographical knowledge base RDF Query Subsumption& View Maintenance Scaling triple stores LESS Semantification Syndication … Foundations Marrying databases with RDFand ontologies Applications Bringing the Data Web to end users Tools 14.07.2011 Sören Auer - The emerging Web of Linked Data 56
104. Open Gov DataPartners Uni Leipzig, DERI Galway, FU Berlin, Semantic Web Company, OpenLink, Tenforce, Exalead, WoltersKluwer, OKFN
105.
106. Outreach & involve original data providers - local, regional, national and EuropeanClose cooperation with W3C eGov IG, OKFN’s OpenEUdata, PSI & grassroots efforts CKAN.org | OKFN’s EuOpenData group |ICT2010 Networking Session UIs and Personalization individual mashups of data with other sources Notification/subscription service based on personal prefs Transparency wishlists, upload revisions, derivates create and publish queries, reports and visualizations 58
107. Linked Enterprise Intra Data Webs can fill the gap between Intra-/Extranets and EIS/ERP Facilitates data integration along value-chains within and across enterprises The pragmatic, incremental, vocabulary based Linked Data approach reduces data integration costs significantly The wealth of knowledge available as Linked Open Data can be leveraged as background knowledge for Enterprise applications Linked Enterprise Data
Editor's Notes
Initially, the Web consisted of many Websites containing only unstructured/textual content.The Web 2.0 extended this traditional Web with few extremely large Websites specializing on certain specific content types. Examples are:Wikipedia for encyclopedic articlesDel.icio.us for Web linksFlickr for picturesYouTube for VideosDigg for news…These websites provide specialized searching, querying, sharing, authoring specifically adopted to the content type of their concern.
Popular content types such as pictures, movies, calendars, encyclopedic articles, news recipes etc. are already sufficiently well supported on the Web.However, there is a long tail of special-interest content (profiles of expertise, historic data and events, bio-medical knowledge, intra-corporational knowledge etc.) which has very low or no current support (for filtering, aggregation, searching, querying, collaborative editing) on the Web.