OpenHPI 1.6 - The Vision of the Semantic Web - Part 2
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OpenHPI 1.6 - The Vision of the Semantic Web - Part 2

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Free online Lecture "Semantic Web Technologies" at OpenHPI. Visit the Course website, registration is free. You will find the lecture recordings as mp3 and also as video at ...

Free online Lecture "Semantic Web Technologies" at OpenHPI. Visit the Course website, registration is free. You will find the lecture recordings as mp3 and also as video at https://openhpi.de/course/semanticweb

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    OpenHPI 1.6 - The Vision of the Semantic Web - Part 2 OpenHPI 1.6 - The Vision of the Semantic Web - Part 2 Presentation Transcript

    • Semantic Web Technologies Lecture 1: The Web of Data 06: The Vision of the Semantic Web Part 2 Dr. Harald Sack Hasso Plattner Institute for IT Systems Engineering University of Potsdam Spring 2013This file is licensed under the Creative Commons Attribution-NonCommercial 3.0 (CC BY-NC 3.0)
    • 2 Lecture 1: The Web of Data Open HPI - Course: Semantic Web Technologies Semantic Web Technologies , Dr. Harald Sack, Hasso-Plattner-Institut, Universität Potsdam
    • 3 06: The Vision of the Semantic Web Pt.2 OpenHPI - Course Semantic Web Technologies - Lecture 1: The Web of Data Semantic Web Technologies , Dr. Harald Sack, Hasso-Plattner-Institut, Universität Potsdam
    • Semantic Web ...towards an „intelligent“ Web4 Das Semantic Web • Semantic Web Technologies , Dr. Harald Sack, Hasso-Plattner-Institut, Universität Potsdam
    • Semantic Web ...towards an „intelligent“ Web5 URI - Uniform Resource Identifier Fabio Capello http://dbpedia.org/resource/Fabio_Capello Semantic Web Technologies , Dr. Harald Sack, Hasso-Plattner-Institut, Universität Potsdam
    • Semantic Web ...towards an „intelligent“ Web6 http://de.wikipediapedia.org/wiki/Fabio Capello http://dbpedia.org/resource/Fabio_Capello Semantic Web Technologies , Dr. Harald Sack, Hasso-Plattner-Institut, Universität Potsdam
    • Semantic Web ...towards an „intelligent“ Web http://dbpedia.org/resource/Fabio_Capello7 Semantic Web Technologies , Dr. Harald Sack, Hasso-Plattner-Institut, Universität Potsdam
    • Semantic Web ...towards an „intelligent“ Web8 http://dbpedia.org/resource/Fabio_Capello :Fabio_Capello dbpp:birthPlace :San_Canzian . :Fabio_Capello dbpp:birthDate “1946-06-18“ . :Fabio_Capello rdfs:type dbpo:SoccerManager . :Fabio_Capello rdfs:type dbpo:Person . ... RDF Resource Description Framework :Fabio_Capello rdf:type dbpo:SoccerManager . RDF Tripel RDF Subject RDF Property RDF Object Semantic Web Technologies , Dr. Harald Sack, Hasso-Plattner-Institut, Universität Potsdam
    • Semantic Web ...towards an „intelligent“ Web9 http://dbpedia.org/ontology/SoccerManager dbpo:SoccerManager rdf:type owl:class . dbpo:SoccerManager rdfs:subClassOf dbpo:Person . dbpo:SoccerManager rdfs:label “SoccerManager“ . dbpp:birthPlace rdf:type rdf:Property . dbpp:birthPlace rdfs:domain dbpo:Person . dbpp:birthPlace rdfs:range dbpo:Place . dbpp:birthDate rdf:type rdf:Property . dbpp:birthDate rdfs:domain :Person . dbpp:birthDate rdfs:range xsd:date . ... RDF Schema SoccerManager is subclass of Date Person Place birthDate birthPlace Semantic Web Technologies , Dr. Harald Sack, Hasso-Plattner-Institut, Universität Potsdam
    • Semantic Web ...towards an „intelligent“ Web10 1946-06-18 Fabio Capello birthDate entities classes is a is a LivingPeople ∩ DeadPeople =∅ is subclass of is subclass of logical constraint Date Person birthDate ∀x.∃y.hasDeathDate(x,y) ∧ Person(x) ∧ Date(y) (Description Logics) ! DeadPeople(x) + Rules Semantic Web Technologies , Dr. Harald Sack, Hasso-Plattner-Institut, Universität Potsdam
    • Semantic Web Look for all Soccer Players ...towards an „intelligent“ Web that have scored more than 10 goals as member of a11 national team. PREFIX dbpo: <http://dbpedia.org/ontology/> PREFIX dbpp: <http://dbpedia.org/property/> SELECT DISTINCT ?l ?l2 ?g FROM <http://dbpedia.org> WHERE { ?s rdf:type dbpo:SoccerPlayer . ?s dbpp:nationalteam ?o . ?s rdfs:label?l FILTER langMatches( lang(?l), "EN" ) . ?s dbpp:nationalgoals ?g FILTER(?g>10). ?s dbpp:nationalteam ?nat . ?nat rdfs:label ?l2 FILTER langMatches( lang(?l2), "EN" ) . } ORDER BY DESC(?g) Semantic Web Technologies , Dr. Harald Sack, Hasso-Plattner-Institut, Universität Potsdam
    • Look for all Soccer Players that have scored more than 10 goals as member of a national team.12 Semantic Web Technologies , Dr. Harald Sack, Hasso-Plattner-Institut, Universität Potsdam
    • Look for all Soccer Players that have scored more than 10 goals as member of a national team.13 Problem: Data Quality.... Semantic Web Technologies , Dr. Harald Sack, Hasso-Plattner-Institut, Universität Potsdam
    • Next sect ion14 07: Applications in the Web of Data OpenHPI - Course Semantic Web Technologies - Lecture 1: The Web of Data Semantic Web Technologies , Dr. Harald Sack, Hasso-Plattner-Institut, Universität Potsdam