semantic web - a survey talk

WeST – Web Science & TechnologiesUniversity of Koblenz ▪ Landau, Germany

Semantic Web

Steffen Staab

Steffen [email protected]

WeST – Web Science & Technologies

Phone bookCERN

Aalta 234…Zyström 981

…a short history of the Web…

<HTML>Aalta

Interests…Phone 789<HTML>

Zyström

ColleagueTel 981

~1989

789

<HTML>Researcher

Aalta…Zyström



World Wide Web

WWW :=

Hypertext &

Internet &

Social Phenomenon



More than 1 Billion Users Later …

Sir Tim Berners-Lee



…the History of the Web continued…

Phone BookCERN


<HTML>Aalta

Interests…Tel 789<HTML>

Zyström

ColleguePhone 981

~1995



…the Problem Inherent to Knowledge…

<HTML>

<HTML>

~1995



…now you can read it more easily…

<HTML>

<HTML>

What a computer understands!



…the History of the Semantic Web…

<HTML>Forscher

Aalta…Zyström

<HTML>

<HTML>

~1995

<HTML>Researcher




What do you need for this idea?

<HTML>Forscher

Aalta…Zyström

<HTML>

<HTML>

<HTML>Researcher


1. Language for (meta-)data

2. Language for describing

schema which (meta-)data

adhere to

3. Exchange of data and schemata via

Internet

4. Lots of people and applications



Semantic Web

Semantic Web :=

Semantic Web Data &

Ontologies &

Internet &

Social Phenomenon

1. Language for (meta-)data

2. Language for describing

schema which (meta-)data

adhere to

3. Exchange of data and schemata via

Internet

4. Lots of people and applications



SEMANTIC WEB IN ACTION



Google for „Vincent van Gogh“

Screenshot by Kingsley Idehen



Van Gogh on Facebook



Facebook Data Object




Van Gogh on Wikipedia



DBPedia Data Object

Note: DBPedia harvests knowledge from Wikipedia




Freebase Data Object

Note: MetaWeb producing Freebase is a Semantic Web company bought by Google in 2010




Google Search with Google Knowledge Graph



APPLICATION: SCHEMA.ORG



Google Rich Snippets



Content

What’s in the schema? Creative works: CreativeWork, Book, Movie,

MusicRecording, Recipe, TVSeries ... Embedded non-text objects: AudioObject, ImageObject,

VideoObject Event Organization Person Place, LocalBusiness, Restaurant ... Product, Offer, AggregateOffer Review, AggregateRating

Annotating data within normal Web pages

http://schema.org/CreativeWork

http://schema.org/Book

http://schema.org/Movie

http://schema.org/MusicRecording

http://schema.org/Recipe

http://schema.org/TVSeries

http://schema.org/AudioObject

http://schema.org/ImageObject

http://schema.org/VideoObject

http://schema.org/Event

http://schema.org/Organization

http://schema.org/Person

http://schema.org/Place

http://schema.org/LocalBusiness

http://schema.org/Restaurant

http://schema.org/Product

http://schema.org/Offer

http://schema.org/AggregateOffer

http://schema.org/Review

http://schema.org/AggregateRating



Return on Investment

BestBuy early adopter Launched Semantic Product Web, augmented with

GoodRelations and RDFa, 30% increase in traffic to their pages. (not a scientifically precise experiment!)

Nick Cox@Yahoo! search results augmented with structured data get

15% higher click-through rate

Cf http://www.chiefmartec.com/2009/12/best-buy-jump-starts-data-web-marketing.html



APPLICATION: E-GOVERNMENT



http://lisa.west.uni-koblenz.de/lisa-demo/

Family‘s analysis of Munich LOD + Open Street Map data



http://lisa.west.uni-koblenz.de/lisa-demo/

Entrepreneur‘s analysis of Munich LOD + Open Street Map data

1. PrizeGerman Linked Open Gov Data Competition 2012



APPLICATION: WEB 3.0



Making Web 2.0 More Accessible

Links Location

Persons

Knowledge Tags

low- to midlevel features

xxxxxxxxx

GeoNames



Choosing between Koblenz – and Koblenz



Contextual Information



Tag-based refinement



A tag view of „Koblenz“ & „Castle“



Semantic Identity – Festung Ehrenbreitstein



Persons – Celebrities, FOAFers & Flickr Users

Billion Triples Challenge 1. Prize 2008



APPLICATION: E-SCIENCE



>1000 Life Science DBs, number growing quickly



Querying Biochemical Web Sites

Rich Site Structure



APPLICATION: BUSINESS



Individual knowledge work

Organizational knowledge work

?How to integrated?



Scenario: SME architecture office

Integration of organizational & individual knowledge work

German KM 1. Prize 2011



RESEARCH CHALLENGES



Developing methods…

Identity Provenance

Origin Trust

Search Intelligent Search Ranking

Scalability Cloud Querying Distribution

BTC 1. Prize 2011



THANK YOU!

semantic web - a survey talk

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