opportunities and challenges for using semantic technologies€¦ · opportunities and challenges...

Copyright 2009 Digital Enterprise Research Institute. All rights reserved.

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Opportunities and Challenges for

using Semantic Technologies

Stefan Decker

Digital Enterprise Research Institute www.deri.ie

Digital Enterprise Research Institute www.deri.ie

A Network of Data

and Knowledge

Interconnected

Universal

All encompassing

assists humans, organisations and systems with problem solving

enabling innovation and increased productivity

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Linked Data: Two Key Ingredients

1. RDF – Graph based Data

Identifies objects (URIs)

Interlink information (Relationships)

2. Vocabularies (Ontologies)

provide shared understanding of a domain

organise knowledge in a machine-comprehensible way

give an exploitable meaning to the data

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Why Graphs and Ontologies?

Linked Data!

Cities:Dublin

84421km2

Geo:IslandOfIreland

EU:RepublicOfIreland

Geo:locatedOn

Geo:area Geo:hasCapital

Geo:hasLargestCity

Wikipedia.org

Gov.ie

EU:RepublicOfIreland

Person:BrianCowen

Gov:hasTaoiseach Gov:hasDepartment

IE:DepartmentOfFinance

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Linked Open Data cloud - domains

Over 200 open data sets with more than 25 billion facts,

interlinked by 400 million typed links, doubling every 10 month!

http://lod-cloud.net/

Linking Open Data cloud diagram, by Richard Cyganiak and Anja Jentzsch.

Media

Government

Geo

Publications

User-generated

Life sciences

Cross-domain

US government

UK government

BBC

New York Times

LinkedGeoData

6

BestBuy

Overstock.com

Facebook

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Network Effects

Digital Enterprise Research Institute www.deri.ie Which school is the

best for our child?

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Where should

we locate the

new factory?

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Where did our money go?

TARP Funds

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Where do I place…

A new hospital?

A new school?

A new shop?

A new distribution

centre?

A new factory?

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Effects….

Reuse of the data, new business opportunities.

Increase the citizen engagement and participation

Improve eGovernment effectiveness and Interoperation:

direct access, cut costs

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Open Data vs. Linkable Data

Linkable, Open Data!

Open Data

Equal access for all

Licensing, legal issues

Transparency

Changing the way

government works

Linkable Data

Easy to Integrate

Standards complient

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

Tim Berners-Lee

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education development transportation

decision based on facts!

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Examples from around the world …

Country Official? Rating Datasets

Sweden N ★★ few

New Zealand Y ★★ many

Ireland Y ★★★ few

Canada Y ★★★ many

United States Y* ★★★★ many

Spain N ★★★★★ few

United Kingdom Y ★★★★★ many*

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Government data catalogs

http://datos.fundacionctic.org/sandbox/catalog/map

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Development 2006 - now

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data.gov.uk

http://data.gov.uk/

Provides guidance for all UK

governmental agencies how to

publish with Linked Data

Lists datasets and applications

for developers and end-customers

We’re active in supporting this

effort

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Linked Governmental Data in use …

UK Public Sector Information Data Mashup

http://map.psi.enakting.org/

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Linked Governmental Data in use …

Research Funding Explorer

http://bis.clients.talis.com/

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Linked Governmental Data in use …

Comparing US and UK Global Foreign Aid http://data-gov.tw.rpi.edu/demo/linked/aidviz-1554-10030.html

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Linked Governmental Data in use …

Crime statistics http://www.jenitennison.com/visualisation/crime.html

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Ireland: Fingal Open Data

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Italy: Tentino Open Data

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LATC:EC Governmental Datasets

http://latc-project.eu/

Will focus on three domains: business-related data,

legal data, and data about European institutions

Publish 20 datasets produced by European

institutions with an expected volume of over 10 billion

triples and 100 million links, such as:

Eurostat

CORDIS

European Job Mobility Portal

Euro-LEX

…

“To create an in-depth test-bed for data intensive

applications concerning EC governmental data.”

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driving Web standards

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Standardisation

eGovernment Interest Group (eGov IG)

http://www.w3.org/2007/eGov/IG/

“The mission of the eGov IG is to explore how to improve

access to government through better use of the Web and

achieve better government transparency using open Web

standards at any government level (local, state, national

and multi-national)”

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Standardisation

Projects http://www.w3.org/egov/wiki/Projects

Outreach

Demonstration

Best Practices for Using Web Technologies to Deliver

Government Services

Best Practices for Government Data Management

Best Practices for Government Use of Social Media

Data Catalog Vocabulary task force

http://www.w3.org/egov/wiki/Data_Catalog_Vocabulary

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You’re sitting on a treasure chest … http://w

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