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What is Wikimedia
The mission of the Wikimedia Foundation is to
empower and engage people around the world to
collect and develop educational content under a free
license or in the public domain, and to disseminate it
effectively and globally.

In collaboration with a network of chapters, the
Foundation provides the essential infrastructure and
an organizational framework for the support and
development of multilingual wiki projects and other
endeavors which serve this mission. The
Foundation will make and keep useful information
from its projects available on the Internet free of
charge, in perpetuity.
Open collaboration with Wikimedia,
the best of all possible worlds?




                    CC-BY-SA



                               © 2011 National Maritime
                               Museum. All rights reserved.
NMM / Wikipedia warship history
articles improved by collaboration
NARA, lessons from 120,000 images
(1% of Wikimedia Commons)
Unexpected copyright issues (<=)




              © Trustees of the
              British Museum
Data mining and the CC-BY-SA
problem (=>)



                               Lead text
                               from article




                               Original
                               translations by
                               attributable
                               editors
For the British Museum article, 686
authors currently require attribution
Number of contributions, name, edit date range
521 (518/3) M.chohan 2007-01-07 19:55 – 2008-01-01 11:25
181 (181/0) 81.106.79.133 (anon) 2007-01-02 22:25 – 2007-11-13 15:33
42 (16/26) Ham 2004-08-25 19:11 – 2010-05-12 18:27                     Numbers based on the
38 (38/0) 194.203.201.92 (anon) 2007-01-03 14:56 – 2007-08-02 12:53    English Wikipedia only.
28 (28/0) Neddyseagoon 2006-05-14 11:46 – 2011-01-14 12:01             280+ other Wikipedias
27 (11/16) Runcorn 2006-08-23 19:55 – 2007-04-05 12:14                 might need to be
25 (0/25) CommonsDelinker (bot) 2007-08-21 13:37 – 2011-02-12 23:30
24 (24/0) Cheesy mike 2007-11-07 13:51 – 2007-11-13 18:00
                                                                       checked.
23 (21/2) Mervyn 2006-05-01 15:38 – 2007-08-07 08:11
22 (22/0) Johnbod 2008-02-26 00:03 – 2011-05-26 12:15                  Many edits may no
22 (8/14) Canterbury Tail 2007-11-09 17:20 – 2011-10-10 17:58          longer exist in the
19 (17/2) LordHarris 2007-02-09 13:29 – 2007-04-24 21:07
                                                                       current version being
19 (19/0) Balthazarduju 2007-04-03 14:20 – 2008-10-29 19:48
15 (15/0) 195.194.86.1 (anon) 2006-08-15 07:51 – 2010-04-20 13:17      data-mined.
14 (12/2) Yahel Guhan 2007-04-19 04:42 – 2007-04-24 05:08
13 (9/4) Williams119 2007-11-11 23:51 – 2007-11-17 21:36
13 (13/0) 84.69.246.63 (anon) 2006-08-14 18:25 – 2006-08-14 19:26
12 (0/12) SmackBot (bot) 2006-03-25 19:17 – 2010-09-13 19:30
10 (0/10) Gaius Cornelius 2006-02-09 22:56 – 2010-10-06 23:08
10 (7/3) Pigsonthewing 2007-03-17 21:07 – 2007-06-27 08:22
10 (9/1) Awadewit 2007-07-12 01:26 – 2007-07-12 01:57
9 (0/9) Jpbowen 2005-08-21 12:56 – 2009-01-11 19:08
9 (9/0) Reaper7 2007-07-10 21:02 – 2008-03-07 12:16
8 (8/0) Cherryguy93 2009-09-12 19:13 – 2011-04-16 09:30
8 (3/5) Jllm06 2009-10-01 19:03 – 2010-06-05 16:33
+ 661 further named authors

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Ashley Van Haeften on Wikimedia

  • 1. What is Wikimedia The mission of the Wikimedia Foundation is to empower and engage people around the world to collect and develop educational content under a free license or in the public domain, and to disseminate it effectively and globally. In collaboration with a network of chapters, the Foundation provides the essential infrastructure and an organizational framework for the support and development of multilingual wiki projects and other endeavors which serve this mission. The Foundation will make and keep useful information from its projects available on the Internet free of charge, in perpetuity.
  • 2. Open collaboration with Wikimedia, the best of all possible worlds? CC-BY-SA © 2011 National Maritime Museum. All rights reserved.
  • 3. NMM / Wikipedia warship history articles improved by collaboration
  • 4. NARA, lessons from 120,000 images (1% of Wikimedia Commons)
  • 5. Unexpected copyright issues (<=) © Trustees of the British Museum
  • 6. Data mining and the CC-BY-SA problem (=>) Lead text from article Original translations by attributable editors
  • 7. For the British Museum article, 686 authors currently require attribution Number of contributions, name, edit date range 521 (518/3) M.chohan 2007-01-07 19:55 – 2008-01-01 11:25 181 (181/0) 81.106.79.133 (anon) 2007-01-02 22:25 – 2007-11-13 15:33 42 (16/26) Ham 2004-08-25 19:11 – 2010-05-12 18:27 Numbers based on the 38 (38/0) 194.203.201.92 (anon) 2007-01-03 14:56 – 2007-08-02 12:53 English Wikipedia only. 28 (28/0) Neddyseagoon 2006-05-14 11:46 – 2011-01-14 12:01 280+ other Wikipedias 27 (11/16) Runcorn 2006-08-23 19:55 – 2007-04-05 12:14 might need to be 25 (0/25) CommonsDelinker (bot) 2007-08-21 13:37 – 2011-02-12 23:30 24 (24/0) Cheesy mike 2007-11-07 13:51 – 2007-11-13 18:00 checked. 23 (21/2) Mervyn 2006-05-01 15:38 – 2007-08-07 08:11 22 (22/0) Johnbod 2008-02-26 00:03 – 2011-05-26 12:15 Many edits may no 22 (8/14) Canterbury Tail 2007-11-09 17:20 – 2011-10-10 17:58 longer exist in the 19 (17/2) LordHarris 2007-02-09 13:29 – 2007-04-24 21:07 current version being 19 (19/0) Balthazarduju 2007-04-03 14:20 – 2008-10-29 19:48 15 (15/0) 195.194.86.1 (anon) 2006-08-15 07:51 – 2010-04-20 13:17 data-mined. 14 (12/2) Yahel Guhan 2007-04-19 04:42 – 2007-04-24 05:08 13 (9/4) Williams119 2007-11-11 23:51 – 2007-11-17 21:36 13 (13/0) 84.69.246.63 (anon) 2006-08-14 18:25 – 2006-08-14 19:26 12 (0/12) SmackBot (bot) 2006-03-25 19:17 – 2010-09-13 19:30 10 (0/10) Gaius Cornelius 2006-02-09 22:56 – 2010-10-06 23:08 10 (7/3) Pigsonthewing 2007-03-17 21:07 – 2007-06-27 08:22 10 (9/1) Awadewit 2007-07-12 01:26 – 2007-07-12 01:57 9 (0/9) Jpbowen 2005-08-21 12:56 – 2009-01-11 19:08 9 (9/0) Reaper7 2007-07-10 21:02 – 2008-03-07 12:16 8 (8/0) Cherryguy93 2009-09-12 19:13 – 2011-04-16 09:30 8 (3/5) Jllm06 2009-10-01 19:03 – 2010-06-05 16:33 + 661 further named authors