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StatMine – prototype
0.2
Edwin de Jonge, Jan van der Laan & Jessica Solcer
Statistics Netherlands (CBS)
NTTS 2013, March 6 2013
StatMine
Goal: Improve use figures Statistics Netherlands
How: Add Analysis layer to OutputDB (StatLine)
Working approach:
•
•
•
•

Formulate improvement
Develop software prototype
Test prototype on (real) users
Evaluate

But why?
StatMine

2
Mission SN

“The mission of Statistics Netherlands is to publish
reliable and coherent statistical information that
meets the needs of society” (source: www.cbs.nl)

StatMine 0.2

3
Mission SN

“The mission of Statistics Netherlands is to publish
reliable and coherent statistical information that
meets the needs of society” (source: www.cbs.nl)

StatMine 0.2

4
Evidence-based
policy

5
What is the state of the Netherlands?

StatLine contains over
1.000.000.000 figures!

StatMine

6
Problem 1
Figures ≠ Information

StatMine

7
1. Figures ≠ Information
We know (from user study):
• Some important user don’t get the most out of
StatLine:
• Data journalists
• Policy makers

• They don’t find and see interesting
information, because of tabular presention (data =
table)

StatMine 0.2

8
Solution 1
Visualize
data!

StatMine

9
Problem 2.
Fragmented information

StatMine

10
2. Fragmented information
For policy makers and journalist most information in
OutputDB is fragmented:
• Users need to combine fragments from different
statistics
• Diabetes (insuline usage, hospital admissions,
mortality, visits to doctor, obesity)
• Energy consumption vs economic growth
• Income vs economic growth
• (Perceived) public safety vs registered crimes
StatMine 0.2

11
2. Solution:
Let users
combine
tables

(even if we
wouldn’t …)

StatMine

12
Prototype StatMine 0.2
Implements:
• Visual interactive data browsing
• Combining fragments of different tables

Tested on:
• 40 SN employees (++)
• 40 policy makers (++)

StatMine 0.2

13
Line chart

Bar chart

- Show development

- Compare

Bubble/scatter chart

Mosaic chart

- Show correlation

- Show structure

StatMine 0.2

14
Small multiples

StatMine 0.2

15
StatMine

16
Technical
HTML5
JSON

R

JavaScript

CSS
SVG

• Runs on desktop
• makkelijk over te zetten naar webserver

StatMine 0.2

17
Currently (2013)
• All Official Statistics have confidence interval.
• StatMine 0.3 will test if showing uncertainty
improves/changes understanding of (quality of)
figures.
• May lead to publishing interval estimates (in stead
of point estimates).

StatMine

18
Conclusion
• Visual data browsing is promising for
• Our own statisticians (quality control)
• External policy makers and journalists

• Using real end users for testing is very helpful:
• Lots of suggestions for improvement from users
• Users feel involved in innovation process of NSI

StatMine

19

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StatMine (New Technologies and Techniques for Statistics)

  • 1. StatMine – prototype 0.2 Edwin de Jonge, Jan van der Laan & Jessica Solcer Statistics Netherlands (CBS) NTTS 2013, March 6 2013
  • 2. StatMine Goal: Improve use figures Statistics Netherlands How: Add Analysis layer to OutputDB (StatLine) Working approach: • • • • Formulate improvement Develop software prototype Test prototype on (real) users Evaluate But why? StatMine 2
  • 3. Mission SN “The mission of Statistics Netherlands is to publish reliable and coherent statistical information that meets the needs of society” (source: www.cbs.nl) StatMine 0.2 3
  • 4. Mission SN “The mission of Statistics Netherlands is to publish reliable and coherent statistical information that meets the needs of society” (source: www.cbs.nl) StatMine 0.2 4
  • 6. What is the state of the Netherlands? StatLine contains over 1.000.000.000 figures! StatMine 6
  • 7. Problem 1 Figures ≠ Information StatMine 7
  • 8. 1. Figures ≠ Information We know (from user study): • Some important user don’t get the most out of StatLine: • Data journalists • Policy makers • They don’t find and see interesting information, because of tabular presention (data = table) StatMine 0.2 8
  • 11. 2. Fragmented information For policy makers and journalist most information in OutputDB is fragmented: • Users need to combine fragments from different statistics • Diabetes (insuline usage, hospital admissions, mortality, visits to doctor, obesity) • Energy consumption vs economic growth • Income vs economic growth • (Perceived) public safety vs registered crimes StatMine 0.2 11
  • 12. 2. Solution: Let users combine tables (even if we wouldn’t …) StatMine 12
  • 13. Prototype StatMine 0.2 Implements: • Visual interactive data browsing • Combining fragments of different tables Tested on: • 40 SN employees (++) • 40 policy makers (++) StatMine 0.2 13
  • 14. Line chart Bar chart - Show development - Compare Bubble/scatter chart Mosaic chart - Show correlation - Show structure StatMine 0.2 14
  • 17. Technical HTML5 JSON R JavaScript CSS SVG • Runs on desktop • makkelijk over te zetten naar webserver StatMine 0.2 17
  • 18. Currently (2013) • All Official Statistics have confidence interval. • StatMine 0.3 will test if showing uncertainty improves/changes understanding of (quality of) figures. • May lead to publishing interval estimates (in stead of point estimates). StatMine 18
  • 19. Conclusion • Visual data browsing is promising for • Our own statisticians (quality control) • External policy makers and journalists • Using real end users for testing is very helpful: • Lots of suggestions for improvement from users • Users feel involved in innovation process of NSI StatMine 19