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Vertiefungsseminar – session 1

Vertiefungsseminar – session 1. Dr . Anna Fensel , Univ.-Prof. Dr. Dieter Fensel STI Innsbruck University of Innsbruck 2 October 2013. Administrative matters Introduction to the topic Ontologien Ihre Anwendung im Web: Semantic Web Vier Schritte: Definition der Struktur

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Vertiefungsseminar – session 1

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  1. Vertiefungsseminar – session 1 Dr. AnnaFensel, Univ.-Prof. Dr. Dieter Fensel STI InnsbruckUniversity of Innsbruck 2 October 2013

  2. Administrative matters Introduction to the topic Ontologien Ihre Anwendung im Web: Semantic Web Vier Schritte: Definition der Struktur Strukturierung des Contents/Inhalts Multikanalkommunikation Semantische Annotierungen Concrete goal and (first) tasks References Inhalt

  3. Overall learning goal • Dive into a specific topic in detail. • Here: Get an overview ofthe processes of semantic content creation and learn to create such content. • Small, hands-on sessions, common annotationproject. Also: • Presentation skills • Working in teams • Scientific writing

  4. Administrative issues • The course is typically held on Wednesdays, 12:15-13:00, as scheduled: http://orawww.uibk.ac.at/public/lfuonline_lv.details?sem_id_in=13W&lvnr_id_in=703037. • Unless communicated otherwise. • Location: First two times in the room 3W04, then most likely it will be changed. • Attendance is mandatory. • Grades: participation in the sessions, papers, presentations, overall project. • Main contact for the course: Dr. Anna Fensel University of Innsbruck Technikerstr. 21a 6020 Innsbruck, Austria email: anna.fensel@sti2.at • However, individual seminars are expected to be overtaken by other STI Innsbruck members as well.

  5. Ontologie (WiederverwendbaresDomainmodel) conceptual model of a domain (ontological theory) unambiguous terminology definitions formal, explicit specification of a shared conceptualization commonly accepted understanding machine-readability with computational semantics Gruber, “Toward principles for the design of ontologies used or knowledge sharing?” , Int. J. Hum.-Comput. Stud., vol. 43, no. 5-6,1995

  6. “The Semantic Web is an extension of the current web in which information is given well-defined meaning, better enabling computers and people to work in cooperation.”T. Berners-Lee, J. Hendler, O. Lassila, “The Semantic Web”, Scientific American, May 2001 Web Data Annotation (Syntaktisches) Verbinden von Web-Objekten wie Textteile, Bilder,… mit deren semantischen Begriffen (z.B. dieses Bild stellt Innsbruck dar, der Tourismusverband Innsbruck ist ein touristischer Verein) Data Linking on the Web (Web of Data) Globales Vernetzen von Wissen durch URI, RDF und SPARQL (z.B. Verbinden meines Kalenders mit meinen RSS Feeds, meinen Bilder,…) Data Integration overthe Web Nahtlose Integration von Daten, welche auf verschiedenen konzeptionellen Modellen basieren (z.B. Integration von Hotel- und Veranstaltungsdaten einer Region) Semantic Web isteineAnwendung von Ontologien

  7. Semantic Web: knowledge graph & rich snippets

  8. VierSchritte Schritte: • Ontologien definieren • Events, Hotels, Restaurants und Sehenswürdigkeiten. 2. Inhalt den Ontologien zuordnen • Zum Beispiel ein spezifisches Hotel oder ein spezifisches Event in Innsbruck zuordnen. 3. Definition von Publikationsregeln für die Ontologien • Skalierbares Publizieren und Lesen in verschiedenen, heterogenen Kanälen. 4. Automatische Annotation mit semantischen Formaten und Vokabularen

  9. Schritt 1: Ontologiendefinieren

  10. Schritt 2: Inhalt den Ontologienzuordnen

  11. Schritt 3: Definition von Publikationsregeln Multi-Kanal Kommunikation ist eine Methode der Informationsverbreitung und -gewinnung in/aus verschiedenen Sozialen und Web Medien: • Publikationsinhalt auswählen • Kanäle auswählen • Publizieren in vielen verschiedenen Kanälen • Feedback einsammeln und analysieren (Sentiment Analysis) Web/Blog Social Web Press releases + Ads LOD

  12. Schritt 4: SemantischeAnnotierung Das semantische Web erfordert semantische Annotationen, z.B. mittels RDF, von Webseiten. So können Inhalte, die sonst nur von Menschen verstanden werden, auch für Maschinen interpretierbar gemacht werden. Vokabularen sind Schematas zur Informationsbeschreibung, aus verschiedenen Bereichen, z.B. Personen, Wirtschaft, eCommerce, etc.: Linked Data Cloud. Formate sind Sprachen mit denen Ontolgien beschrieben werden können. RDFa-Lite

  13. (Schritt 5) Linked Open Data = Web of Data Ca. 100 Milliarden Sachverhalte; exponentiell wachsend

  14. Concrete goal and tasks Goal: Produce annotations in different vocabularies and formats for the destination portal of Innsbruck: www.innsbruck.info in order to make this website more attractive and visible on the Web. First tasks: • At first, we take Schema.org vocabulary, and microdata as the annotation format, and the hotels as the objects which we want to annotate. • This means, we produce annotations complying to http://schema.org/Hotel • And take the (84) hotels listed at: http://www.innsbruck.info/en/your-stay/hotelrooms.html • Each group gets several hotels and annotates them as complete as possible by the time of the next seminar. • At the next seminar, we discuss the outcome and further steps.

  15. References • This lecture and further course materials to be uploaded here: http://sti-innsbruck.at/teaching/course-schedule/ws-201314/vertiefungsseminar-ws-201314 • Useful tools – Microdata / rich snippets generators and validators: • http://www.google.com/webmasters/tools/richsnippets • https://www.google.com/webmasters/markup-helper/ • http://www.microdatagenerator.com • http://www.ebusiness-unibw.org/tools/grsnippetgen/de • For more information about Semantic annotations in general, see Lecture 5 “Semantic Annotation” from our Semantic Web Master curriculum: http://sti-innsbruck.at/teaching/curriculum/semantic-web

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