LOD2 Open Government Data Stakeholder Survey, Michael Martin and Martin Kaltenböck

These slides are published under :
http://creativecommons.org/licenses/by/3.0

Creating Knowledge out of Interlinked Data

The Open Government Data Stakeholder Survey
Michael Martin, University of Leipzig (Germany)
Martin Kaltenböck, Semantic Web Company (Austria)
Sören Auer (University of Leipzig), Helmut Nagy (Semantic Web Company)

OKCon2011 - Berlin, 30.06. 2011

Agenda

• LOD2 Project & the OGD Stakeholder Survey

• Results of the OGD Stakeholder Survey

• Publishing the Stakeholder Survey as LOD

• Conclusion & Outreach - What‘s next

LOD2 OGD Stakeholder Survey 30.06. 2011 http://lod2.eu

OGD Stakeholder Survey: Results

LOD2
Creating Knowledge out of
Interlinked Data


LOD2 in a Nutshell

Creating Knowledge out of Interlinked Data

Research focus 10 Partners of 7 countries

• Very large RDF data management • University of Leipzig, Germany
• Enrichment & Interlinking • DERI Galway, Ireland
• Fusion & Information Quality • FU Berlin, Germany
• Adaptive User Interfaces • Semantic Web Company, Austria
• OpenLink Software, UK
3 Use Cases • TenForce, Belgium
• Exalead, France
• Media & Publishing • Wolters Kluwer, Germany
• Linked Enterprise Data • Open Knowledge Foundation, UK
• Open Government Data • CWI, Netherlands


3 Use Cases in LOD2

Objective
Applying Linked Data technologies
in an enterprise stack to support
ENTERPRISE Human Resources (HR) related issues.
APPLICATIONS

Exalead, France

Objective MEDIA OPEN
GOVERNMENT Objective
Supporting content- &
PUBLISHING DATA Improving accessibility,
related production
findability & reusability
workflows in the media Open Knowledge
Wolters Kluwer of Open Government
& publishing industry. Germany Foundation, UK
Data in Europe:
publicdata.eu


Open Governmental Data – and ideal testbed for Linked Data?

Single Point of Access: European registry & collaboration for open government data
Outreach & involve data providers - local, regional, national and European

 Close cooperation with W3C eGov IG, OKFN’s OpenEUdata, PSI & grassroots efforts
 CKAN.org | semic.eu | EIF European Interoperability Framework | ICT2010 Networking Session
 UIs and Personalization
 Individual mashups of data with other sources
 Notification/subscription service based on personal preferences
 Transparency wishlists, upload revisions, derivates
 Create and publish queries, reports and visualisations


LOD2 Open Government Data Use Case: publicdata.eu



The LOD2
Open Government Data (OGD)
Stakeholder Survey


The LOD2 OGD Stakeholder Survey

WHY
• Involve OGD community in Europe (& worldwide) in publicdata.eu process
• Ask for their needs & requirements in the area of OGD & publicdata.eu
• Use results for requirements elicitation for the LOD2 use case: publicdata.eu

HOW
• Set up by OKFN & SWC with support from DERI, Wolters Kluwer and ULEI
• Easy to use online survey tool (surveygizmo.com)
• Promoted via blogs, mailings, mailing lists and additional viral marketing
channels as well as at related events in Europe & by the EC
• Duration: 5 weeks
• 329 participants
• Results available since May 2011: http://survey.lod2.eu/
• Published in HTML, PDF & raw survey data in CSV & RDF
for re-use under CC-BY license



Interest in ‚domains of data‘
For the complete results you can see that "Geospatial information", "Scientific data" and
"Environment" data are the top ranked domains.



Currently used formats
For the preferences on the format of data you can see that current "traditional" formats like HTML,
PDF, CSV/XLS and DOC/RTF are preferred.



Requested (future) formats
In general you can also see that ideally ("in future") formats like "XML", "RDF" and "APIs" will become
more importance. It seems that all user types find DOC, RTF and PDF not a suitable solution for a
future Open Government Data infrastructure. As we haven't listed JSON, RSS and YAML in this list,
respondents have urged that in the free comment field.



From where should the data come?

The results show that "national" data is most important followed by "regional", "EU-
wide" and "worldwide" data.



What is important for quality assurance?
The complete results show that "provenance/source of data" followed by "format of
data", "completeness of meta data", "ranking / comments by users" and "official
certificates"



What features does a EU data catalogue need?
The complete results show that "providing raw datasets", "information about versioning
of data sets" and "searching, exploring, grouping and clustering of data sets" are the
features which are "expected to have" while "crowd sourcing mechanism (e.g. data
repair)", "alerts on regional information" and "analysis and visualisation tools" have the
highest rating in the "like to have" category.



What is also expected on publicdata.eu?

For this question "white papers & best practice", "news on Open Government Data"
and "use cases & sucess stories" are "expected to have" while "ideas for apps",
"events" and again "use cases & success stories" are ranked highest in the "like to
have" category.



Publishing the Survey as RDF




- Questionnaire and results of the survey published as
- HTML,
- CSV and
- PDF
-These formats are only for humans which represent
use case specific views




- Publishing in RDF give further benefits:

-Aggregating data to enable other user(-generated)
aspects (SPARQL)

- Interlink the data with other datasets …
- … which enable (advanced) users to create more
complex queries (aggregating resources from non-
local information spaces like DBpedia )

- Schema and data can be queried together



 RDF-Schema creation to represent Surveys

http://ns.aksw.org/survey/



 Transformation of the Data
 Questionnaire delivered as PDF containing 5
survey sections, 60 questions, 221 Options for
single -/multiple - choice questions -> modeled with
the survey vocabulary
 Resultset of the Survey tool delivered as CSV
which is being transformed with PHP
 Creating RDF-Resources for every :
 Participant: Response (329)
 Answers to Questions (12891)
 Overall ~ 70,000 triples



 Deployment of the Data
 Upload the knowledge base into Virtuoso
 Questionnaire and survey results as one model
 Universal Server with multiple RDF / LOD
functionalities
Adding metadata to the OGD-Survey-model
(contributor, publisher, license)




 Publishing the model via OntoWiki
 human and machine friendly
 HTML/JS – Web interface to explore and maintain
the data
 SPARQL Editor / Endpoint
 LOD client and server




http://data.lod2.eu/2010/ogd-survey/



Conclusion & Outreach



Conclusion
• Analyzing the 329 responses showed the importance of facilitating
Open Government Data

• Geospatial information, Scientific & Environmental Data are the top
ranked requested domains.

• National & regional data seems to be most important for users

• It shows a shift in currently used formats to new formats

• It shows that the source of a dataset is the most important indicator
for quality assurance

• White Papers, Best Practise and Success Stories are requested as
additional information on publicdata.eu


LOD2 Outreach- What’s next in LOD2

• LOD2 PUBLINK Consultancy 2010/2011
• Greater London Authority, UK
• City of Vienna, Austria
• Umweltbundesamt, Austria
• Historische Kommission, Germany
• Parliament of Finland, Finland
• Instituto Canario de Estadística – ISTAC

• Next PUBLINK call Sept 2011 (LOD consumption)
http://lod2.eu
• LOD2 Webinar Series
http://blog.lod2.eu
http://survey.lod2.eu
• Results of LOD2 OGD Stakeholder Survey 2010
A new survey is planned for late 2011

• LOD2 Technology Stack coming soon (autumn2011)

• Open Data Camp 2011 powered by LOD2 in
Warsaw, Poland - around 21st of October 2011


These slides are published under :
http://creativecommons.org/licenses/by/3.0

Thank you for your attention!
LOD2 Project: http://lod2.eu
LOD2 Blog: http://blog.lod2.eu
LOD2 OGD Stakeholder Survey: http://survey.lod2.eu/
LOD2 OGD Stakeholder Survey data: http://data.lod2.eu/2010/ogd-survey/
PUBLINK LOD Consultancy: http://lod2.eu/Article/Publink.html

Martin Kaltenböck, Semantic Web Company Michael Martin, University of Leipzig
Web: http://www.semantic-web.at Web: http://aksw.org
Blog: http://blog.semantic-web.at Blog: http://blog.aksw.org
Mail: m.kaltenboeck@semantic-web.at Mail: martin@informatik.uni-leipzig.de
Phone: +43 - 1 - 402 12 35 – 25
LOD2 OGD Stakeholder Survey 30.06. 2011
Phone: +49 341 97-32322 http://lod2.eu

LOD2 Open Government Data Stakeholder Survey, Michael Martin and Martin Kaltenböck

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LOD2 Open Government Data Stakeholder Survey, Michael Martin and Martin Kaltenböck