State of the Semantic - ai.sri.comnysmith/slides/aic-seminars/080708-studer.pdf · KIT –die...

KIT – die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH)

Rudi Studer ‐‐ Semantic MediaWiki1

State of theSemantic MediaWiki

Rudi Studer

KIT Karlsruhe Institute of TechnologyFZI Research Center for Information Technologyontoprise

August 7, 2008 - SRI



Knowledge Management

Semantic Web Applications

Electronic Markets

eGovernment

Semantic Web Infrastructure

Ontology Management

Data, Text and Web Mining

Services Research

Application-orientedResearch

Know-how TransferRealizing new Scenarios

Application-orientedResearch

Product DevelopmentInnovative Solutions

Basic ResearchApplication-oriented

Research

AIF

B

Semantic Karlsruhe



Agenda

Semantic WikisWikipediaSemantic MediaWiki

Knowledge inputDifferent modesUsing machine learning

Knowledge reuseWithin the wikiExport and usage



Wikipedia

A free encyclopedia

Top 10 Website

250+ languages

10 Mio+ articles

2 Mio+ English articles

3 Mio+ media files

Up to 50.000 hits per second

9% of all internet users – every day



The Secret of Wikis

Everyone can readNo cost for accessing the articles

Free license to reuse the content





Editing



Simple Syntax

'''Karlsruhe''' (population 285,812) is a city in the south west of [[Germany]], in the [[Bundesland]] [[Baden-Württemberg]], located near the [[French]]-German border.



The Secret of Wikis

Everyone can readNo cost for accessing the articles

Free license to reuse the content

Everyone can writeSystem allows everyone to write

Syntax is easy to learn

Contain lots of knowledge…Do they?



What Wikipedia knows

Wikipedia has articles about…… all cities

… their populations

… their mayors

So why can’t I ask for a list of the world’s biggest cities with a female mayor?



Let’s see what happens…



What humans see


What Humans See

Karlsruhe

... has a population of 285,812

... is located in Germany

... was founded in 1715

... has mayor Heinz Fenrich


What Computers See

Karlsruhe

... 285,812

... Germany

... 1715

... Heinz Fenrich

… some kind of association between Karlsruhe and several numbers and named entities



Agenda





Karlsruhe is a city in[[Germany]]with an area of 173 km².

Karlsruhe is a city in [[located in::Germany]]with an area of [[area::173 km²]].

Semantic MediaWiki extension:Typed Links

Extend wiki with typed links

So the computer “understands” it

Karlsruhe Germanyarea located in173 km²


Mapping of SMW Data Model to OWL

Article owl:Individual

Category owl:Class

Relation (page in range) owl:ObjectProperty

Relation (datatype in range) owl:DatatypeProperty

Typed link [[relation::object]]

Object property instance

[[relation::value]] Datatype property instance

[[Category:class]]

(on article page)

rdf:type classClass instantiation

[[Category:class]]

(on category page)

rdfs:subClassOf class

Subsumption


Karlsruhe on semanticweb.org


Browse the wiki



Templates

{{City| Country=Germany| Population=285812| State=Baden-Württemberg| Founded=1715| Mayor=Heinz Fenrich| Area=173 km²}}



Input forms



Halo sidebar



Halo annotation mode



Using pattern‐based extraction

Instances occur in patterns

Based on existing knowledge (some annotations) discover patterns in the corpus

Test these patterns by asking users

The happiest people in Germany live in Osnabrück .The richest people in America live in Hollywood.The * people in * live in * .


Implementation in Semantic MediaWiki




Iterative Pattern Induction

Bass America

Minnow St. Lawrence

Haddock North Atlantic

Bluegill North America

Scrod New England

Salmon Atlantic

Hypostomus South America

Tuna Japan

match on wiki retrieve contexts

learn patterns

match patternsharvest instances

... is from the * and * south ... of which are native to * and ...

... on both sides of the * . * is ...

... rarely found outside * and * ...

... is from the St. Lawrence and Lake Ontario south …native to a wide area of North America and ...... on both sides of the North Atlantic. Haddock is ...... rarely found outside New England and New York...




Agenda






• Available as RDF

• Via SPARQL endpoint

• RDFa export in development



Many pages answer questions– list of female tennis players

– asteroids named after people

– countries sorted by area, population, …

They can be generated automatically

Less maintenance tasks

Higher consistency

Automatic tables and lists



Inline queries

{{#ask:[[Category:City]][[located in::Germany]]

|?state|?population|?area#km²}}



Inline query results



Inline query results



Ontoworld



Timeline of upcoming events



Community Knowledgebase



Reuse via iCalendar



Exports different data formats



Data can be formatted in different ways



Pie chart



Bar chart



On a map



On Google Maps



Visualization of relations as graphs



Fully internationalized software

LocalizationsEnglishGermanSpanishFrenchItalianKoreanDutchPolishRussianArabic

Simplified ChineseTraditional ChineseJavaneseNorwegianPortugueseOccitanAfrikaansBulgarianEsperantoLuxembourgian

HebrewSuomiHindiHaitianSlovakMarathiMalayalamSwedishVietnameseGalicianAnd others…



Anyone using it?

WikiMaasSydney DirectoryLIOWiki – Internal KMWikicompanyVaniSourceSpieleWiki – German, on gamesArchiPlanetBionik‐WikiBible WikiBO Wiki (Medizin)CASE WikiCentiareChemistry SWChickipediaCreative CommonsDiscourse DB

Eureka Science Journal WatchGothic AlmanachHuman CelliNatureJurisPediaMathWebYugioh@WikiaNorthern Ireland Gov’t WikiPhiloWikiPlaceographyReformed WordScubaWikiOneWorldWikiMIT SimileTechPresentationsSee more complete list

Wikia: The world’s biggest wiki hoster offers SMW

http://localhost/clio/index.php/Smws













What’s next?

Explore enterprise setting (ACTIVE)

Conceptual knowledge

Caching

More browsing features

Quality control



Next generation knowledge management

EU FP7 Integrated Project3 years

€12M

3/2008‐3/2011

12 partners

Case studiesengineering

consultancy

telecoms

kea-pro



Research Challenges:sharing knowledge – combining formal and informal approaches

using task context to manage information presentation

sharing and reusing knowledge processes

Karlsruhe Service Research Institute | www.ksri.uni‐karlsruhe.de | 08.08.2008

using context within processes

& processes to understand

context

sharing processessharing processes& sharing in processes& sharing in processes

sharing knowledge in context &

sharing context


The Knowledge Workspace is to some extentrealised based on semantic technologies

Semantic MediaWikiSemantic MediaWiki

Metadata Repository

Storage, Reasoning, Querying, direct API access

Metadata Repository

Storage, Reasoning, Querying, direct API access

myOntologymyOntologyOntoGameOntoGame ……

Lightweight Knowledge Representation FormalismLightweight Knowledge Representation Formalism

Enterprise Knowledge OntologyEnterprise Knowledge Ontology Knowledge Process OntologyKnowledge Process Ontology

SemFSSemFS

RSSiCALRDF…

RSSiCALRDF…

Articulation BroadcastLeveraging & Repair

Vocab

ulary, M

etho

dology,

Interaction Pa

radigm

sVocab

ulary, M

etho

dology,

Interaction Pa

radigm

s

Knowledge WorkspaceKnowledge Workspace

56 Karlsruhe Service Research Institute www.ksri.uni-karlsruhe.de | August 2008



Conceptual knowledge

Describe concepts with Description Logic (EL++)

Introduces expressive conceptual knowledge to the wiki

For querying knowledge (not for asserting!)

e.g. ISWC‐Paper defined as:[[Category:Paper]][[accepted by.event in series::ISWC]]



Semantic MediaWiki

Very flexible system for creating data

“Soft” introductionPeople often scared about Semantic Web

You can still use it as a standard wiki

Immediate benefit

“The simplest database that could work”

Data is there – play with it!



Further informationwww.semantic‐mediawiki.org

www.semanticweb.orgwww.aifb.uni‐karlsruhe.dewww.ksri.uni‐karlsruhe.de

www.fzi.dewww.ontoprise.de

Thank you!

http://www.semantic-mediawiki.org/

http://www.semanticweb.org/

http://www.aifb.uni-karlsruhe.de/

http://www.ksri.uni-karlsruhe.de/

http://www.fzi.de/

http://www.ontoprise.de/



References

Markus Krötzsch, Denny Vrandecic, Max Völkel, Heiko Haller, Rudi Studer: Semantic Wikipedia. Journal of Web Semantics 5(4): 251‐261 (2007)

Sebastian Blohm, Markus Krötzsch, Philipp Cimiano: The Fast and the Numerous – Combining Machine and Community Intelligence. In Proceedings of the AAAI 2008 Workshop on Wikipedia and Artifical Intelligence, AAAI Press, July 2008.

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State of the Semantic - ai.sri.comnysmith/slides/aic-seminars/080708-studer.pdf · KIT –die...

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