CROWDSOURCING GEOREFERENCE - A CASE STUDY ON A NATIONAL

PROJECT

Petr Pridal, Ph.D. petr.pridal@klokantech.com

Moravian Library in Brno, Czech Republic

ICA Digital Approaches to Cartographic Heritage, 10th Conference & Workshop, Corfu 2015

“It were the dreams and desires of travellers, monarchs and generals…”

“… the hands of artists and cartographers, who created these works…”

“… and now it's you who can rediscover these documents, put them on modern maps, and

share them with the future generations.”

CONNECT THE PAST VISIBLE ON THE OLD MAPS

WITH THE PRESENT

WWW.TEMAP.CZ 2011 - 2015

Why? 5 minutes from a volunteer:

• Visualization of the old maps in 3D space and as overlays

• New ways how to discover maps with geographical search

• Enrichment of the metadata of maps required for research and education

Results?

46.000 high-resolution maps from 19 institutions

760.000 points, if one takes 10 seconds it is over 2000 hours!

250.000 people involved

(Czech Republic has 10 mil.)

Go to this report

Apr 26, 2010 ­ May 26, 2015Audience Overview

Language Sessions % Sessions

1. cs 277,462 78.56%

2. cs­cz 33,238 9.41%

3. en­us 17,896 5.07%

4. sk 8,355 2.37%

5. en 2,686 0.76%

6. de 2,446 0.69%

7. pl 2,295 0.65%

8. de­de 1,948 0.55%

9. en­gb 1,144 0.32%

10. sk­sk 712 0.20%

Overview

 Sessions

January 2011 January 2012 January 2013 January 2014 January 2015

5,0005,0005,000

10,00010,00010,000

Sessions

353,176Users

247,320Pageviews

1,236,870

Pages / Session

3.50Avg. Session Duration

00:04:11Bounce Rate

43.19%

% New Sessions

69.75%

New Visitor Returning Visitor

30.1%

69.9%

© 2015 Google

All Sessions100.00%

Lessons learned:

• User friendly, easy to use online tools, localisation, delayed login, introduction video

• Social media (Facebook)

• Competition and rewarding - prices & rounds

• Communication to the public is essential

• Quality control step (reviewers) + history revisions

Cultural heritage & PR

• Announcements together all involved institutions

• Project start in connection with a real event (reopening of the map library in Charles University in Prague)

• TV news, radio interviews - repeated contact

• Competition and rewarding - small prices

• Social media (Facebook) interaction

• Communication to the public is essential (!!!)

www.staremapy.cz