A framework for Linked

Data business models

Michalis Vafopoulosvafopoulos.org

1/10/2011

Main issue

Web of data:① What is and Why is useful② How can be sustainable?

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Outline ① The Web of documents vs. Web of

data ② Linked Data Principles③ Web science perspective④ Why Linked Data⑤ It is the economy stupid!⑥ Network externalities in the Web⑦ Network externalities in Linked Data⑧ A framework for Linked Data Business

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The Web of Documents

• Simple, big and unstructured• Organized in Silos

But humans:• are interested in Things,no documents & these Things might be in docs or elsewhere

• Limited capacity to extract meaning...

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The Web of Data• Analogy: a global filesystem ----> global database• Designed for: human consumption ->machines first, humans

later

• Primary objects: documents --> things (or descriptions of things)

• Links between: documents --> things • Degree of structure in objects: fairly low ---> high• Semantics of content and links: implicit --> explicit

(Tom Heath)5

Linked Data Principles

1. Use URIs as names for things2. Use URIs so that people can look

up (dereference) those names3. When someone looks up a URI,

provide useful information4. Include links to other URIs so that

they can discover more things

The Web of Data: why?

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encourages reuse reduces redundancy maximizes its (real and potential)

inter-connectedness enables network effects to add value

to data

Linked data = internet + http + RDF

http://…/isbn978

Programming the Semantic Web

978-0-596-15381-6

Toby Segaran

http://…/publisher1

O’Reilly

title

name

author

publisher

isbn

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review1

Awesome Book

http://…/

reviewer

Juan Sequeda

http://juansequeda.

com/id

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hasReviewer

description

name

sameAs

livesIn

Juan Sequedaname

http://dbpedia.org/Austin

Two magics of Web Science: the case of Linked Data

It is the economy stupid!

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Network externalities: network goods indirect effects of

consumption/production effects on agents not the originator outside the price system

Positive, e.g. find information Negative, e.g. receive spam

Network externalities in the Web

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fundamental source of value

Web 1.0: links among documents Web 2.0: links among Users and their

contribution Web 3.0: links among structured data

Network externalities in Linked Data

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① Building bidirectional and massively processable interconnections among online data

② Linked Data as an enabler for existing infrastructures

A framework for Linked Data Business models

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① Value Proposition what value the business creates

② Product/Services which service and to whom③ Architecture how the value is created④ Revenue Model sources and types of

income

issues• Incorporate in Web 2.0 (transition)• Key issue for many business• Do not worry about Google!• Standalone data or LD services?• Privacy becomes an issue• LD services to control your personal

LD flow?• …

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overview

Web of data:① What is and Why is useful② How can be sustainable?

Questions?

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supplement

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the 5 stars of open linked data

★make your stuff available on the Web (whatever format)

★★make it available as structured data (e.g. excel instead of image scan of a table)

★★★non-proprietary format (e.g. csv instead of excel)

★★★★use URLs to identify things, so that people can point at your stuff★★★★★link your data to other people’s data to provide contexthttp://lab.linkeddata.deri.ie/2010/star-scheme-by-example/