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May, 2014 · ulrich atz · @statshero
The Tau of Data 
A New Metric to Assess the Timeliness of Data in Catalogues
Structured evidence
Compelling stories
Inspiring events
Training
Research
Development
Standards
Business
Policy
Sir Tim Berners-Lee
Sir Nigel Shadbolt
Gavin Starks CEO
18+ years startup experience
20+ years science, web, media, and data
Jeni Tennison CTO
World-leader in open data and linked data
W3C, legislation.gov.uk and data.gov.uk
Stuart Coleman VP Market Dev.
15+ years in commercial tech space 
Formerly HP, CA, and AMEE
Build the evidence base for open data
“from the services perspective, [...], the most
critical questions revolve around achieving
sufficient timeliness of the data.” 

Lindman, Rossi and Tuunainen (2013) 
Open Data Services: Research Agenda
Reasons why we choose
to focus on timeliness
1.  Build trust with users and support
innovation.
2.  A metric will put a spotlight on
timeliness and may lead to efficiency,
e.g. by automating processes.
3.  It is a necessary condition for a
sustainable open data ecosystem.
The Tau of Data
The Tau of Data
Three case studies
Data catalogue
 𝝉
World Bank
 0.46
data.gov.uk
 0.25
London Datastore
 0.52
Let me know 
–  if you’re working on something similar
–  if you’d like to try it out yourself
–  if you’ve come across something related

Get in touch: ulrich@theodi.org
Or Twitter: @statshero
Questions?
Email: ulrich@theodi.org · Twitter: @statshero
Thank you!

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The Tau of Data

  • 1. May, 2014 · ulrich atz · @statshero The Tau of Data A New Metric to Assess the Timeliness of Data in Catalogues
  • 2.
  • 3. Structured evidence Compelling stories Inspiring events Training Research Development Standards Business Policy
  • 4. Sir Tim Berners-Lee Sir Nigel Shadbolt Gavin Starks CEO 18+ years startup experience 20+ years science, web, media, and data Jeni Tennison CTO World-leader in open data and linked data W3C, legislation.gov.uk and data.gov.uk Stuart Coleman VP Market Dev. 15+ years in commercial tech space Formerly HP, CA, and AMEE
  • 5.
  • 6. Build the evidence base for open data
  • 7. “from the services perspective, [...], the most critical questions revolve around achieving sufficient timeliness of the data.” Lindman, Rossi and Tuunainen (2013) Open Data Services: Research Agenda
  • 8. Reasons why we choose to focus on timeliness 1.  Build trust with users and support innovation. 2.  A metric will put a spotlight on timeliness and may lead to efficiency, e.g. by automating processes. 3.  It is a necessary condition for a sustainable open data ecosystem.
  • 9. The Tau of Data
  • 10. The Tau of Data
  • 11. Three case studies Data catalogue 𝝉 World Bank 0.46 data.gov.uk 0.25 London Datastore 0.52
  • 12.
  • 13.
  • 14.
  • 15. Let me know –  if you’re working on something similar –  if you’d like to try it out yourself –  if you’ve come across something related Get in touch: ulrich@theodi.org Or Twitter: @statshero
  • 16. Questions? Email: ulrich@theodi.org · Twitter: @statshero Thank you!