O slideshow foi denunciado.
Utilizamos seu perfil e dados de atividades no LinkedIn para personalizar e exibir anúncios mais relevantes. Altere suas preferências de anúncios quando desejar.

Meaning of Data - Web Semantics in TYPO3

1.277 visualizações

Publicada em

Basic introduction about Web Semantic Technologies and brief ideas in possibilities for TYPO3 CMS.

Publicada em: Tecnologia
  • Seja o primeiro a comentar

Meaning of Data - Web Semantics in TYPO3

  1. 1. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 Meaning of Data Web Semantics in TYPO3
  2. 2. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 session:~$ whoami • freelance software engineer • since 2007 TYPO3 Core Developer / Active Contributor • from 2010 to 2015 Leader of the TYPO3 Core Team • 2002-2007 studies in computer science • since 2014 studies in internet web science
  3. 3. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 Overview • “What is it all about?!“ • Linked Open Data - An idea… • Boring Theory - Technology Stack • Reasoning & Examples • Possibilities for TYPO3
  4. 4. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 “What is it all about?!“
  5. 5. Google Search for “palma de mallorca“
  6. 6. … for “weather in palma de mallorca“
  7. 7. DBpedia - basically Wikipedia extraction
  8. 8. DBpedia - basically Wikipedia extraction
  9. 9. DBpedia - basically Wikipedia extraction
  10. 10. “brad pitt fighting with his wife in a movie“
  11. 11. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 • works quite well • has limitations on • combinations • finding relevant data • reusing relevant data Searching in Google
  12. 12. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 Linked Open Data
  13. 13. Linked Open Data Graph 2009
  14. 14. Linked Open Data Graph 2014
  15. 15. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 Linked Open Data • synonyms: “car” vs. “automobile“ • homonyms: “jaguar“ could be car, animal or Mac OS X • hierarchy: “car“ and “bicycle“ are known as “vehicle“ • language: “visualize“ vs. “visualise“ • language: “visualisieren“@de vs. “visualiser“@fr
  16. 16. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 Linked Open Data • Wikipedia has lots of information already • HTML just represents and links information • HTML does not provide further meaning of data • DBpedia is basically a semantic extract of Wikipedia • DBpedia provides meaning on various resources • data can be fetched using SPARQL (“semantic SQL“)
  17. 17. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 Linked Open Data • many variants like WikiData, GeoNames/GeoSPARQL, … • information is stored at different locations/hosts • information is linked all across the internet • URIs are used to identify “things“ for machines • URLs are used to provide information for humans • goal is to have a massive graph of linked data
  18. 18. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 Very Boring Theory
  19. 19. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 Technology Stack
  20. 20. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 Technology Stack • XML & XSD (XML Schema Definition) - valid & well-formed • RDF (Resource Description Framework) - meaning • RDF-S (RDF Schema) - add own concepts • OWL (Ontology Web Language) - vocabulary • SPARQL - fetch results from the above
  21. 21. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 RDF Triples • 3 components create a particular meaning • <Subject>  <Predicate/Property>  <Object>  .   • <:Oliver>  <:hasFirstName>  <“Oliver“>  ;
                    <:talksAbout>  <:SemanticWeb>  ;
                    <:talksAt>  <:T3CampMallorca15>  .   • <:T3CampMallorca15>  <:starts>  <“2015-­‐09-­‐25“^^xsd:date>  ;
                                        <:ends>  <“2015-­‐09-­‐27“^^xsd:date>  ;
                                        <:happensIn>  <:PalmaDeMallorca>  .   • <:PalmaDeMallorca>  <owl:sameAs>  <dbr:Palma,_Majorca>  .   • <dbr:Palma,_Majorca>  <rdf:type>  <dbo:City>  .
  22. 22. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 RDF Schema • What’s a “City“ actually? • <dbr:Palma,_Majorca>  <rdf:type>  <dbo:City>  .   • <dbo:City>  <rdf:type>  <rdfs:Class>  ;
                      <rdfs:subClassOf>  <dbo:Settlement>  .   • <:name>  <rdf:type>  <rdf:Property>  ;
                <rdfs:domain>  <dbo:City>  ;
                <rdfs:range>  xsd:string  .   • <:isPartOf>  <rdf:type>  <rdf:Property>  ;
                        <rdfs:domain>  <dbo:City>  ;
                        <rdfs:range>  <:Region>  ;
                        <rdfs:subPropertyOf>  <:belongsTo>  .
  23. 23. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 Annotations • describe current document or node • Rich Snippets • Microformat (limited vocabulary) • Microdata • RDFa Lite (RDF Annotations) • JSON-LD (Linked Data)
  24. 24. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 Microdata • <div  itemscope  itemtype="http://schema.org/Movie">
    <h1  itemprop="name">Avatar</h1>
    <div  itemprop="director"  itemscope
              itemtype="http://schema.org/Person">
        Director:  <span  itemprop="name">James  Cameron</span>,
        born  <span  itemprop="birthDate">August  16,  1954</span>
    </div>
    <span  itemprop="genre">Science  fiction</span>
    <a  href="../movies/avatar-­‐theatrical-­‐trailer.html"
          itemprop="trailer">Trailer</a>
 </div>   • <:something  rdf:type  http://schema.org/Movie>  .
 <:something  http://schema.org/name  “Avatar“>  .
  25. 25. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 RDFa Lite • <p  vocab="http://schema.org/"  typeof="Person">
      My  name  is
      <span  property="name">Manu  Sporny</span>
      and  you  can  give  me  a  ring  via
      <span  property="telephone">1-­‐800-­‐555-­‐0199</span>
      or  visit  
      <a  property="url"  href="http://manu.sporny.org/">
          my  homepage</a>.
 </p>   • <:something  rdf:type  http://schema.org/Person>  .
 <:something  http://schema.org/name  “Manu  Sporny“>  .
 <:something  http://schema.org/telephone  “…“>  .
  26. 26. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 JSON-LD • {
    "@context":  {
        "name":  "http://schema.org/name",
        "homepage":  {
            "@id":  "http://schema.org/url",
            "@type":  "@id"
        }
    },
    "name":  "Manu  Sporny",
    "homepage":  "http://manu.sporny.org/",
    "image":  "http://manu.sporny.org/images/manu.png"
 }
  27. 27. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 OWL • effectively working with RDF/RDF-S • classes & individuals (“instances“) • properties & data-types (“predicates“) • ranges & domains • required for proper reasoning and inference • comes in 3 dialects - lite, description logic, full
  28. 28. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 OWL • equivalents by rules • Spaniard:  Person  and
 (inhabitantOf  some  SpanishCity)   • meaning of properties • inverse, symmetric, transitive, disjoint, … • <Palma  isPartOf  Mallorca>  &  <Mallorca  contains  Palma>   • cardinalities of properties - minimum, maximum, exact • <:hasParent  owl:cardinality  “2“^^xsd:integer>
  29. 29. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 Assumptions • Closed World Assumption (CWA) • “everything is said, there’s nothing more“ • Open World Assumption (OWA) • “there might still be more unknown facts“ • <:Bob  :hasSister  :Alice>  .   • <:Bob  :hasSister  :Cassandra>  .  #  what  he  does  not  know…
  30. 30. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 SPARQL • “it’s like SQL, but very different…“ • PREFIX  dbo:  <http://dbpedia.org/ontology/>
 PREFIX  dbr:  <http://dbpedia.org/resource/>
 SELECT  DISTINCT  ?subject  ?object
 WHERE  {
    ?subject  rdf:type  dbo:Automobile  .
    ?subject  dbo:manufacturer  ?object  .
    FILTER(?object  =  dbr:SEAT)
 }   • dbr:SEAT_Ibiza    #  ?subject      dbr:SEAT  #  ?object
 dbr:SEAT_Exeo                              dbr:SEAT
 dbr:SEAT_IBE                              dbr:SEAT
  31. 31. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 Storage • MySQL seems to be possible, but gets slow • Stanbol, Virtuoso, Sesame, Allegro, Jena • choosing the proper storage depends • frequency of loads and amount of tripples • level of inferencing • query language
  32. 32. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 Reasoning & Examples
  33. 33. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 Reasoning & Examples • Demo in Protégé • Tool to model ontologies • Developed at Standford University
  34. 34. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 Possibilities for TYPO3
  35. 35. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 Activities in the past • extension “semantic“ # discontinued • SPARQL endpoint handling to import RDF triples • extension „scotty“ # discontinued • bring semantic technologies into TYPO3 CMS • categories, taxonomies, identities • diploma thesis by Sebastian Kurfürst # Flow & Neos
 “Exposing Domain Models as Linked Data“
  36. 36. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 Future possibilities • linking custom domain models with ontologies • enriches the meaning of your data • allows more sophisticated search statements • exposing data by having an own SPARQL endpoint • adds more meaning to your data than REST does • automatically enrich your markup with RDFa • SEO at it’s best & makes Google happy… maybe…
  37. 37. Just a “VroomVroom“ model example…
  38. 38. Just a “VroomVroom“ view example…
  39. 39. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 Future possibilities • project by Johannes Goslar • RTE with Named Entity Recognition (NER) • “Alex bought a Jaguar in 2011“ • “Alex[Person] bought[verb] Jaguar[Thing] in 2011[Date]“ • Jaguar could be a car, an animal or Mac OS X version • automated annotation of written text with RDF tripples
  40. 40. NER example in TYPO3 CMS RTEMeeting, Date, Location
  41. 41. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 ?Questions ohader
 @ohader
 Oliver_Hader follow me
  42. 42. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 Thank you ohader
 @ohader
 Oliver_Hader follow me
  43. 43. Meaning of Data - Web Semantics in TYPO3 Oliver Hader, 09/2015 Links • http://lod-cloud.net/ • http://bnode.org/blog/2009/07/08/the-semantic-web-not-a-piece-of-cake • http://www.thefigtrees.net/lee/blog/2006/11/semantic_web_technologies_in_t.html • http://teaching-wiki.sti2.at/uploads/3/3d/07_SW-OWL.pdf
 & http://teaching-wiki.sti2.at/index.php/Semantic_Web • https://developers.google.com/structured-data/schema-org • https://tools.wmflabs.org/reasonator/ • https://github.com/semsol/arc2/wiki • http://aksw.org/Projects/Erfurt.html • https://forge.typo3.org/projects/extension-semantic • https://forge.typo3.org/projects/extension-scotty • http://www.rn.inf.tu-dresden.de/uploads/Studentische_Arbeiten/Diplomarbeit_Kurf %C3%BCrst_Sebastian.pdf

×