Proposed Linked Data Migration Framework for Singapore Government Datasets
A framework for Linked Data business models
description
Transcript of A framework for Linked Data business models
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 Principles1. 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
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O’Reilly
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Awesome Book
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Juan Sequeda
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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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overviewWeb 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/