Slide 1 Ansgar Scherp – ansgar@informatik.uni-mannheim.de

Linked Open Data &E-CommerceJun.-Prof. Dr. habil. Ansgar Scherpansgar@informatik.uni-mannheim.deResearch Group on Data and Web Science

Slide 3 Ansgar Scherp – ansgar@informatik.uni-mannheim.de

WWW vs. Linked Open Data

WWW :=• Hypertext &

• Internet &• Social phenomenon

Linked Open Data :=• Data &• Vocabularies &• Internet &• Social phenomenon

• Open Data := when it is publicly available

Slide 4 Ansgar Scherp – ansgar@informatik.uni-mannheim.de

Linked Data Principles

1. Identification2. Interlinkage3. Access4. Description

Tim-Berners Lee

See: http://www.w3.org/DesignIssues/LinkedData

Slide 5 Ansgar Scherp – ansgar@informatik.uni-mannheim.de

Linked Data: May ‘07

< 31 Billion Triples

Media

Geolocated

Publications

Web 2.0

Open Government

Cross-Domain

Life-sciences

Sept. ‘11

Source: http://lod-cloud.net

Slide 6 Ansgar Scherp – ansgar@informatik.uni-mannheim.de

Industrial Uptake of Linked Data

Slide 7 Ansgar Scherp – ansgar@informatik.uni-mannheim.de

SEO with• Agreed-on microformat to annotate hypertext• Examples: Book, Movie, Recipe, TVSeries,

Event, Organization, Person, Place, LocalBusiness, Restaurant, Product, Review, ...

<div itemscope itemtype="http://schema.org/Movie"> <h1>Avatar</h1> <span>Director: James Cameron</span> <span>Science fiction</span> <a href="../trailer.html">Trailer</a> … </div>

Further information: rating, price, …

Slide 8 Ansgar Scherp – ansgar@informatik.uni-mannheim.de

SEO with

Query: Logitech Revue

Results: 2.480.000

Increase of CTR: 15-30% at Best Buy

Slide 9 Ansgar Scherp – ansgar@informatik.uni-mannheim.de

• Data extracted from Common Web Crawl

• Currently more than 7 Billion triples

• Markups: RDFa, Microdata and Microformats

.org

Slide 10 Ansgar Scherp – ansgar@informatik.uni-mannheim.de

Searching for Products in LOD

Where can I buyRock & Pop CDs?

• Provide an index for searching structured data

?

Index

Query

M. Konrath, T. Gottron, S. Staab and A. Scherp: SchemEX – Efficient Construction of a Data Catalogue by Stream-based Indexing of Linked Data, J. of Web Semantics, 2012.

BTC 2011

Slide 11 Ansgar Scherp – ansgar@informatik.uni-mannheim.de

WWW and Linked Open Data

WWW :=• Hypertext &

• Internet &• Social phenomenon

Linked Open Data :=• Data &• Vocabularies &• Internet &• Social phenomenon

High potential for E

-Commerce

Slide 12 Ansgar Scherp – ansgar@informatik.uni-mannheim.de

References

• M. Janik, A. Scherp, and S. Staab: The Semantic Web: Collective Intelligence on the Web, Informatik Spektrum, Springer, 34(5): 469-483, 2011.

• Structured metadata at Best Buy, http://priyankmohan.blogspot.com/2009/12/online-retail-how-best-buy-is-using.html

• Thanks for inspirations for WWW & LOD slide go to Steffen Staab