semantic web - a survey talk

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

Semantic Web

Steffen Staab

Steffen Staabstaab@uni-koblenz.de

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

<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

…the Problem Inherent to Knowledge…

<HTML>

…now you can read it more easily…

<HTML>

What a computer understands!

…the History of the Semantic Web…

<HTML>Forscher

Aalta…Zyström

<HTML>

<HTML>Researcher

What do you need for this idea?

<HTML>Forscher

Aalta…Zyström

<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

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!

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