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From Document Web to a Web of Linked Data Dr.  S ö ren Auer AKSW, Institut f ü r Informatik
Overview ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
From the Document Web to the Linked Open Data Web  (and beyond) Linked Data Tutorial ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Conceptual Level Data Access and Integration Linked Data Tutorial ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Data Models ,[object Object],[object Object],[object Object],[object Object],[object Object],Data Access ,[object Object],[object Object],[object Object],[object Object],Data Integration ,[object Object],[object Object],[object Object],Enterprise Information Integration sets of heterogeneous data sources appear as a single, homogeneous data source ,[object Object],[object Object],[object Object],Research Mediators Ontology-based P2P Web service-based
Web 1.0  Web 2.0  Web 3.0 Many Web sites containing unstructured, textual content Few large Web sites are specialized on specific content types Many Web sites containing & semantically syndicating arbitrarily structured content Pictures Video Encyclopedic articles + + Linked Data Tutorial
The Long Tail of Information Domains Pictures News Video Recipes Calendar Currently supported structured content types SemWeb supported structured content Gene sequences Itinerary of King George Talent management Popularity Not or insufficiently supported  content types The  Long Tail  by Chris Anderson ( Wired , Oct.  ´ 04) adopted to information domains … … Requirements- Engineering … … Special interest communities Linked Data Tutorial
Why Do We Need Another Web? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Web server Web server Linked Data Tutorial Leipzig.de Has everything about childcare in L.e. Immobilienscout.de Knows all about real estate offers in Germany DB Web server DB Web server Search engine HTML HTML RDF RDF
Overview ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
RDF - Resource Description Framework ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
RDF Statement / Triple Paradigm ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial http://OntoWiki.net Sö ren Auer dc:creator Subject (Resource) Predicate (Resource) Object (Resource/Literal) RDF/N3: http://OntoWiki.net  http://purl.org/metadata/dublin_core#Creator  "Sö ren Auer “
RDF Document / Model / Graph ,[object Object],[object Object],Linked Data Tutorial [email_address] http://OntoWiki.net http://aksw.org/staff/Soeren dc:Creator Sö ren Auer foaf:Email foaf:Name
RDF Serialization ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial http://OntoWiki.net  http://purl.org/metadata/dublin_core#Creator  http://aksw.org/staff/Soeren http://aksw.org/staff/Soeren  http://purl.org/metadata/dublin_core#Name  "Sö ren Auer " http://aksw.org/staff/Soeren  http://purl.org/metadata/dublin_core#Email  [email_address] [email_address] http://OntoWiki.net http://aksw.org/staff/Soeren Creator Sö ren Auer Email Name
RDF Schema ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial http://OntoWiki.net 16.11.2007 dc:creator ?
RDF-S Class & Property Hierarchies ,[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial hasContent rdf:type rdfs:Property hasAlcoholicContent rdfs:subPropertyOf Beer hasOriginalWortContent  rdfs:subClassOf BottomFermentedBeer
RDF-S Properties ,[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial hasAlcoholicContent rdf:type owl:DatatypeProperty hasAlcoholicContent rdf:type owl:FunctionalProperty hasAlcoholicContent rdfs:domain Beer hasAlcoholicContent rdfs:range xsd:float hasAlcoholicContent rdfs:subPropertyOf hasContent  brews rdf:type owl:ObjectProperty brews rdfs:domain  Brewery brews rdfs:range Beer
RDF-S Instances ,[object Object],Linked Data Tutorial Boddingtons rdf:type Ale Grafentrunk rdf:type Bock Hoegaarden rdf:type White Jever rdf:type Pilsner
Semantic Web Layer Cake Linked Data Tutorial
Linked Data - Paradigm ,[object Object],[object Object],[object Object],[object Object]
Linked Data – Publishing RDF ,[object Object],[object Object],Linked Data Tutorial
Benefits of using the RDF Data Model in the Linked Data Context ,[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
Linking Open Data (LOD) Cloud Linked Data Tutorial
Data Web Moving Targets ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
Data Web Business Models ,[object Object],[object Object],[object Object],Linked Data Tutorial
Overview ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
Triplify Motivation ,[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial Monthly Web application downloads at Sourceforge
Triplify Big Picture Linked Data Tutorial
Triplify Approach: Simplicity ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
Triplify Solution: SQL-SELECT queries map relational data to RDF ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
Example: Wordpress Blog Posts ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial Object property Datatype property 1 2 3
RDF Conversion Linked Data Tutorial http://blog.aksw.org/triplify/post/1 sioc:has_creator http://blog.aksw.org/triplify/user/5 http://blog.aksw.org/triplify/post/1 dc:title “New DBpedia release” http://blog.aksw.org/triplify/post/1 sioc:content “Today we released …” http://blog.aksw.org/triplify/post/1 dcterms:modified “20081020T1635”^^xsd:dateTime http://blog.aksw.org/triplify/post/1 dcterms:created “20081020T1635”^^xsd:dateTime http://blog.aksw.org/triplify/post/1 tag:taggedWithTag “DBpedia” http://blog.aksw.org/triplify/post/1 tag:taggedWithTag “Release” http://blog.aksw.org/triplify/post/1 belongsToCategory  http://blog.aksw.org/triplify/category/34 1 2 3 http://blog.aksw.org/triplify/post/1 id post_author post_title post_content post_date post_modified 1 5 New DBpedia release Today we released … 200810201635 200810201635 id tag:taggedWithTag 1 DBpedia 1 Release .. id belogsToCategory 1 34 …
Example Config ,[object Object],[object Object],[object Object],Linked Data Tutorial
Triplify Temporal Extension ,[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
Triplify Temporal Extension ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial special update path and vocabulary
Triplify Spatial Extension ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial Lon Lat Radius Tag
RDB2RDF tool comparison Linked Data Tutorial More at: http://esw.w3.org/topic/Rdb2RdfXG/StateOfTheArt Tool Triplify R2DQ Virtuoso RDF Views Technology Scripting languages (PHP) Java Whole middleware solution SPARQL endpoint - X X Mapping language SQL RDF based RDF based Mapping generation Manual Semi-automatic Manual Scalability Medium-high (but no SPARQL) medium High
Marrying DBs with RDF & Ontologies ,[object Object],Linked Data Tutorial Publishing DB content as RDF Relational Databases RDF & Ontologies Data Model Relational (tables, columns, rows) Triples (subject, predicate, object) Schema and data separation   Implicit information   Scalability   Schema flexibility   Web data integration readiness  
Overview ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
Transforming Wikipedia into a Knowledge base ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
Structure in Wikipedia ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
Infobox templates ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Wikitext-Syntax RDF representation Linked Data Tutorial
Class Hierarchy ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Extraction results ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial Dataset (en) Triples Articles 7.6M Abstracts 2.1M External Links 3.2M Categories 7.3M Infoboxes 29.3M Persons 560k Yago Classes 2M Wordnet Classes 338k Geo-coordinates 450k Mapping to Flickr, DBLP, Eurostat, CIA-Factbook, Musicbrainz, Project Gutenberg, US Census, … 100k Mapping to OpenCyc 45k
DBpedia Components Wikipedia Dumps Article texts DB tables Infobox Articles Categories … DBpedia datasets SPARQL Endpoint Query Builder SNORQL Browser Traditional Web Browser Web 2.0 Mashups Virtuoso MySQL Extraction loaded into published via … Linked Data … Semantic Web  Browsers OpenCyc Wordnet Freebase Geonames … … … interlinked with other open data Linked Data Tutorial
User Interfaces Linked Data Tutorial
DBpedia SPARQL Endpoint (1) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
DBpedia SPARQL Endpoint (2) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
Overview ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
OntoWiki ,[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
Semantic Wiki ,[object Object],[object Object],[object Object],Linked Data Tutorial
Conceptual Differences:  Views over Articles Wiki articles Linked Data Tutorial Resource views
Conceptual Differences: Forms over Code Wiki code Linked Data Tutorial Forms
Conceptual Similarities: Wikiwiki Concepts ,[object Object],[object Object],[object Object],Ward Cunningham Linked Data Tutorial
Versioning ,[object Object],[object Object],Linked Data Tutorial
OntoWiki Application Framework: Interfaces ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
Extensibility ,[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
Access Control ,[object Object],[object Object],[object Object],Linked Data Tutorial
Other Features ,[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
Architecture Linked Data Tutorial
Vision ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
SoftWiki* Linked Data Tutorial Problem:  Requirements Engineering with large, spatially distributed stakeholder groups Solution:  comprehensive ontology for representing RE relevant knowledge + adapted OntoWiki application Application of text-mining methods for duplicate detection * Work in BmbF funded project with  UniDuE, T-Systems, QA-Systems, LeCoS, ProDV
Linked Data Tutorial
Caucasian Spiders ,[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
Linked Data Tutorial
Professor Catalogue ,[object Object],[object Object],[object Object],Linked Data Tutorial
Linked Data Tutorial
Linked Data Tutorial
Semantic Wikis: Related Work Linked Data Tutorial OntoWiki Semantic MediaWiki  IkeWiki  Main developer Uni Leipzig AKSW AIFB Karlsruhe Salzburg Research Technology PHP/MySQL ,[object Object],Java/Postgres Base artifacts Facts ,[object Object],(annotated) texts Authoring WYSIWIG facts / forms Wiki syntax / semantic forms WYSIWIG / forms Other Data Web development framework Planned Wikipedia deployment Visual KB browser
Vakantieland* ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
Overview ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
Linked Open Geo Data ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial
Faceted Linked-Geo-Data Browser Linked Data Tutorial
AKSW Linked Data Web Building Blocks DBpedia “ Semantification” of Wikipedia Linked Data Tutorial Triplify “ Semantification” of (small) Web Applications OntoWiki Collaborative creation of explicit knowledge via Semantic Wikis OWLDB Extending DBs for ontology handling / revealing implicit information Vakantieland Building Data Web applications SoftWiki Distributed, stakeholder driven Requirements Engineering Foundations Marrying databases with RDF and ontologies Tools Applications Bringing the Data Web to end users ,[object Object],[object Object],xOperator Combining Instant Messaging with the Data Web OpenResearch.org A semantic Wiki for the sciences … DL-Learner Machine Learning for Ontologies
Thanks! ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linked Data Tutorial

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Linked Data Tutorial

  • 1. From Document Web to a Web of Linked Data Dr. S ö ren Auer AKSW, Institut f ü r Informatik
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  • 5. Web 1.0 Web 2.0 Web 3.0 Many Web sites containing unstructured, textual content Few large Web sites are specialized on specific content types Many Web sites containing & semantically syndicating arbitrarily structured content Pictures Video Encyclopedic articles + + Linked Data Tutorial
  • 6. The Long Tail of Information Domains Pictures News Video Recipes Calendar Currently supported structured content types SemWeb supported structured content Gene sequences Itinerary of King George Talent management Popularity Not or insufficiently supported content types The Long Tail by Chris Anderson ( Wired , Oct. ´ 04) adopted to information domains … … Requirements- Engineering … … Special interest communities Linked Data Tutorial
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  • 17. Semantic Web Layer Cake Linked Data Tutorial
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  • 21. Linking Open Data (LOD) Cloud Linked Data Tutorial
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  • 26. Triplify Big Picture Linked Data Tutorial
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  • 30. RDF Conversion Linked Data Tutorial http://blog.aksw.org/triplify/post/1 sioc:has_creator http://blog.aksw.org/triplify/user/5 http://blog.aksw.org/triplify/post/1 dc:title “New DBpedia release” http://blog.aksw.org/triplify/post/1 sioc:content “Today we released …” http://blog.aksw.org/triplify/post/1 dcterms:modified “20081020T1635”^^xsd:dateTime http://blog.aksw.org/triplify/post/1 dcterms:created “20081020T1635”^^xsd:dateTime http://blog.aksw.org/triplify/post/1 tag:taggedWithTag “DBpedia” http://blog.aksw.org/triplify/post/1 tag:taggedWithTag “Release” http://blog.aksw.org/triplify/post/1 belongsToCategory http://blog.aksw.org/triplify/category/34 1 2 3 http://blog.aksw.org/triplify/post/1 id post_author post_title post_content post_date post_modified 1 5 New DBpedia release Today we released … 200810201635 200810201635 id tag:taggedWithTag 1 DBpedia 1 Release .. id belogsToCategory 1 34 …
  • 31.
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  • 33.
  • 34.
  • 35. RDB2RDF tool comparison Linked Data Tutorial More at: http://esw.w3.org/topic/Rdb2RdfXG/StateOfTheArt Tool Triplify R2DQ Virtuoso RDF Views Technology Scripting languages (PHP) Java Whole middleware solution SPARQL endpoint - X X Mapping language SQL RDF based RDF based Mapping generation Manual Semi-automatic Manual Scalability Medium-high (but no SPARQL) medium High
  • 36.
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  • 43. DBpedia Components Wikipedia Dumps Article texts DB tables Infobox Articles Categories … DBpedia datasets SPARQL Endpoint Query Builder SNORQL Browser Traditional Web Browser Web 2.0 Mashups Virtuoso MySQL Extraction loaded into published via … Linked Data … Semantic Web Browsers OpenCyc Wordnet Freebase Geonames … … … interlinked with other open data Linked Data Tutorial
  • 44. User Interfaces Linked Data Tutorial
  • 45.
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  • 50. Conceptual Differences: Views over Articles Wiki articles Linked Data Tutorial Resource views
  • 51. Conceptual Differences: Forms over Code Wiki code Linked Data Tutorial Forms
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  • 60. SoftWiki* Linked Data Tutorial Problem: Requirements Engineering with large, spatially distributed stakeholder groups Solution: comprehensive ontology for representing RE relevant knowledge + adapted OntoWiki application Application of text-mining methods for duplicate detection * Work in BmbF funded project with UniDuE, T-Systems, QA-Systems, LeCoS, ProDV
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  • 71. Faceted Linked-Geo-Data Browser Linked Data Tutorial
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