Re: [Wikimedia-l] Does openly declaring your gender change the probability of having an upload overwritten?

2015-08-14 Thread Laurentius
Il giorno ven, 14/08/2015 alle 01.20 +0100, Fæ ha scritto:
 I'd appreciate any views on whether there is any statistical meaning
 to be
 pulled from these figures, apart from showing that men probably
 outnumber
 women contributors by ten times on Commons.

To have a real answer you should do a statistical test - after
addressing the considerations written by Tomasz.
However, my rough guess is that the answer is no: if you sum up the rows
and the columns, the proportions of declared male/female/none among
reverters and reverted are similar. I've put the numbers on the Commons
page [1].

Laurentius

[1]https://commons.wikimedia.org/wiki/Commons:Village_pump#Does_openly_declaring_your_gender_change_the_probability_of_having_an_upload_overwritten.3F


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Re: [Wikimedia-l] Does openly declaring your gender change the probability of having an upload overwritten?

2015-08-14 Thread
On 14 August 2015 at 11:33, Fæ fae...@gmail.com wrote:
 On 14 August 2015 at 09:58, Magnus Manske magnusman...@googlemail.com
wrote:
 Looking at male-female and female-male, and considering the
much-cited
 15% female editor ratio, it seems women are much more overwrite-happy
than
 men.

I'm just thinking this through again, as there is a logical flaw in
statement. If we take a
​random ​
sample space limited to just overwrites where men are overwriting women or
women are overwriting men, then the ratio of men:women is irrelevant, given
a large sample. Effectively even if men outnumber women by 80% or 90%, the
numbers of overwrites of type male-female and female-male should be
almost the same in /both directions/. If the figures are not similar, then
other factors are at play than just that there are more men contributing to
the project.

Testing this theory, I went to the English Wikipedia database and checking
over all time, found:

+-+--+
| sex | count(*) |
+-+--+
| female-male |   63 |
| male-female |  127 |
+-+--+

Checking the all time figures for Commons shows:

+-+--+
| sex | count(*) |
+-+--+
| female-male | 1309 |
| male-female | 2220 |
+-+--+

​Quickly going to French (far less statistically significant):

+-+--+
| sex | count(*) |
+-+--+
| female-male |1 |
| male-female |   12 |
+-+--+

German:​

+-+--+
| sex | count(*) |
+-+--+
| female-male |6 |
| male-female |   39 |
+-+--+

The conclusion has to be that women are
​at least /twice/ as likely to have an image overwritten by a man on our
projects than the reverse happing. The numbers are sufficiently large for
it to appear a meaningful result.

Fae
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Re: [Wikimedia-l] Does openly declaring your gender change the probability of having an upload overwritten?

2015-08-14 Thread Robert Rohde
To summarize the numbers a bit:

Male uploads that were overwritten by anyone: 7226
Female uploads that were overwritten by anyone: 536
None uploads that were overwritten by anyone: 21484

Male uploads that were overwrote anyone: 6775
Female uploads that were overwrote anyone: 619
None uploads that were overwrote anyone: 21861

As a percentage of all overwritten uploads
Male: 24.7%
Female: 1.8%
None: 73.5%

As a percentage of all uploads that overwrote someone
Male: 23.2%
Female: 2.1%
None: 74.7%

Assuming random assortment, we would expect:

Male-male: 0.247*0.232 = 5.7%
Male-female: 0.52%
Male-none: 18.5%
Female-male: 0.42%
Female-female: 0.038%
Female-none: 1.3%
None-male: 17.1%
None-female: 1.5%
None-none: 54.9%

Given the number of events observed, that translates to expectations of:

Male-male = 1667
Male-female = 152
Male-none = 5412
Female-male = 122
Female-female = 11
Female-none = 380
None-male = 5003
None-female = 439
None-none = 16061

These numbers are broadly consistent with what you posted.  There are some
deviations, but given the sample size and the number of possible
confounding factors (some of which have been mentioned by others) I think
you'd need evidence of a quite large effect before assuming there was an
important bias.

-Robert Rohde


On Fri, Aug 14, 2015 at 2:20 AM, Fæ fae...@gmail.com wrote:

 I have pulled together the following table together for the past 360 days,
 counting whenever an image was reverted by someone who was not the last
 uploader, and then attempting to find any declared gender:

 2014-2015 Commons file overwrite stats compared to gender

 +---+--+
 | sex   | count(*) |
 +---+--+
 | female-female |1 |
 | female-male   |  110 |
 | female-none   |  426 |
 | male-female   |  139 |
 | male-male | 1376 |
 | male-none | 5711 |
 | none-female   |  479 |
 | none-male | 5289 |
 | none-none |15716 |
 +---+--+

 Key: none means not set in user preferences, female-male means a woman
 has overwritten a man's file and male-none means a declared male has
 overwritten an account with no gender set.

 I'd appreciate any views on whether there is any statistical meaning to be
 pulled from these figures, apart from showing that men probably outnumber
 women contributors by ten times on Commons.

 If the email is displaying badly, you can find a wiki formatted table and
 original generating SQL on the Commons village pump[1]. I thought this
 would be of wider interest as though image revert warring is mostly an
 issue for Wikimedia Commons, it is a very similar area of heated disputes
 when compared to edit revert warring on Wikipedia projects. The question
 popped up from someone interested in my long running 'significant reverts'
 tracking report.[2]

 Links:
 1.

 https://commons.wikimedia.org/wiki/Commons:Village_pump#Does_openly_declaring_your_gender_change_the_probability_of_having_an_upload_overwritten.3F
 2. https://commons.wikimedia.org/wiki/User:Fae/SignificantReverts

 Fae
 --
 fae...@gmail.com https://commons.wikimedia.org/wiki/User:Fae
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Re: [Wikimedia-l] Does openly declaring your gender change the probability of having an upload overwritten?

2015-08-14 Thread Jane Darnell
especially when the overwrites are non-contentious (most of my overwrites
are to provide better quality or higher resolution for photos of paintings)

On Fri, Aug 14, 2015 at 10:25 AM, Tomasz Ganicz polime...@gmail.com wrote:

 2015-08-14 2:20 GMT+02:00 Fæ fae...@gmail.com:

  15716


 First of all it seems that vast majority of Commons users do not select
 their gender so they are none. It obviously spoils the rest of the
 statistics. Would be good to add to it numbers of males, females and
 nones included, so it would be more clear which group has generally
 stronger tendency for overwriting.  For example strong overwriter can
 make a 1000 overwrites a year, and a weak one just 1. Such strong
 overwrites can also spoil this statistics. For example - one strong
 female overwrite can easily make all overwrites and the rest of females are
 not overwriting at all :-) The same apply the other way - i.e. we can say
 that women are more vulnerable to be overwriten if you divide numbers of
 overwrites by number of females and compare it to the other groups.


 --
 Tomek Polimerek Ganicz
 http://pl.wikimedia.org/wiki/User:Polimerek
 http://www.ganicz.pl/poli/
 http://www.cbmm.lodz.pl/work.php?id=29title=tomasz-ganicz
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Re: [Wikimedia-l] Does openly declaring your gender change the probability of having an upload overwritten?

2015-08-14 Thread Tomasz Ganicz
2015-08-14 2:20 GMT+02:00 Fæ fae...@gmail.com:

 15716


First of all it seems that vast majority of Commons users do not select
their gender so they are none. It obviously spoils the rest of the
statistics. Would be good to add to it numbers of males, females and
nones included, so it would be more clear which group has generally
stronger tendency for overwriting.  For example strong overwriter can
make a 1000 overwrites a year, and a weak one just 1. Such strong
overwrites can also spoil this statistics. For example - one strong
female overwrite can easily make all overwrites and the rest of females are
not overwriting at all :-) The same apply the other way - i.e. we can say
that women are more vulnerable to be overwriten if you divide numbers of
overwrites by number of females and compare it to the other groups.


-- 
Tomek Polimerek Ganicz
http://pl.wikimedia.org/wiki/User:Polimerek
http://www.ganicz.pl/poli/
http://www.cbmm.lodz.pl/work.php?id=29title=tomasz-ganicz
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Re: [Wikimedia-l] Does openly declaring your gender change the probability of having an upload overwritten?

2015-08-14 Thread Magnus Manske
Looking at male-female and female-male, and considering the much-cited
15% female editor ratio, it seems women are much more overwrite-happy than
men.

Then again, 139:110 are not exactly numbers one does want to base
statistics on...

On Fri, Aug 14, 2015 at 9:25 AM Tomasz Ganicz polime...@gmail.com wrote:

 2015-08-14 2:20 GMT+02:00 Fæ fae...@gmail.com:

  15716


 First of all it seems that vast majority of Commons users do not select
 their gender so they are none. It obviously spoils the rest of the
 statistics. Would be good to add to it numbers of males, females and
 nones included, so it would be more clear which group has generally
 stronger tendency for overwriting.  For example strong overwriter can
 make a 1000 overwrites a year, and a weak one just 1. Such strong
 overwrites can also spoil this statistics. For example - one strong
 female overwrite can easily make all overwrites and the rest of females are
 not overwriting at all :-) The same apply the other way - i.e. we can say
 that women are more vulnerable to be overwriten if you divide numbers of
 overwrites by number of females and compare it to the other groups.


 --
 Tomek Polimerek Ganicz
 http://pl.wikimedia.org/wiki/User:Polimerek
 http://www.ganicz.pl/poli/
 http://www.cbmm.lodz.pl/work.php?id=29title=tomasz-ganicz
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Re: [Wikimedia-l] Does openly declaring your gender change the probability of having an upload overwritten?

2015-08-14 Thread
On 14 August 2015 at 09:58, Magnus Manske magnusman...@googlemail.com wrote:
 Looking at male-female and female-male, and considering the much-cited
 15% female editor ratio, it seems women are much more overwrite-happy than
 men.

 Then again, 139:110 are not exactly numbers one does want to base
 statistics on...

I agree that intuitively the numbers look too marginal to draw strong
conclusions, apart perhaps from deducing that though the proportion of
women who are active on Wikimedia Commons remains far too low, a
user's gender does not have any significant affect on whether they get
overwritten or overwrite others. I wanted to raise it as statistical
interpretation is not my forte, and there are a number of researchers
who follow this list who are darn hot on statistics or might draw
comparisons with existing gender related measurements :-)

With respect to being *overwrite-happy*, it is worth re-enforcing that
healthy collaborative work on Wikimedia Commons does include files
that have a lot of planned overwrites and only in a minority of cases
is significant overwriting a symptom of a dispute. For example the
maps of the USA which track the status of rapidly changing same-sex
marriage legislation are some of the most overwritten files on
Commons, having hundreds of overwrites, and all of the changes are
positive improvement which help to illustrate some popular LGBT
articles around this area of newsworthy law and politics.

Cheers,
Fae

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Re: [Wikimedia-l] Does openly declaring your gender change the probability of having an upload overwritten?

2015-08-14 Thread Jane Darnell
Well given the case of women overwriting photos of themselves, I would
totally agree with you. In my (admittedly few) conversations with Wikipedia
article subjects, women object most to the photos of themselves, while men
talk about specific lines of text.

On Fri, Aug 14, 2015 at 10:58 AM, Magnus Manske magnusman...@googlemail.com
 wrote:

 Looking at male-female and female-male, and considering the much-cited
 15% female editor ratio, it seems women are much more overwrite-happy than
 men.

 Then again, 139:110 are not exactly numbers one does want to base
 statistics on...

 On Fri, Aug 14, 2015 at 9:25 AM Tomasz Ganicz polime...@gmail.com wrote:

  2015-08-14 2:20 GMT+02:00 Fæ fae...@gmail.com:
 
   15716
 
 
  First of all it seems that vast majority of Commons users do not select
  their gender so they are none. It obviously spoils the rest of the
  statistics. Would be good to add to it numbers of males, females and
  nones included, so it would be more clear which group has generally
  stronger tendency for overwriting.  For example strong overwriter can
  make a 1000 overwrites a year, and a weak one just 1. Such strong
  overwrites can also spoil this statistics. For example - one strong
  female overwrite can easily make all overwrites and the rest of females
 are
  not overwriting at all :-) The same apply the other way - i.e. we can say
  that women are more vulnerable to be overwriten if you divide numbers of
  overwrites by number of females and compare it to the other groups.
 
 
  --
  Tomek Polimerek Ganicz
  http://pl.wikimedia.org/wiki/User:Polimerek
  http://www.ganicz.pl/poli/
  http://www.cbmm.lodz.pl/work.php?id=29title=tomasz-ganicz
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[Wikimedia-l] Does openly declaring your gender change the probability of having an upload overwritten?

2015-08-13 Thread
I have pulled together the following table together for the past 360 days,
counting whenever an image was reverted by someone who was not the last
uploader, and then attempting to find any declared gender:

2014-2015 Commons file overwrite stats compared to gender

+---+--+
| sex   | count(*) |
+---+--+
| female-female |1 |
| female-male   |  110 |
| female-none   |  426 |
| male-female   |  139 |
| male-male | 1376 |
| male-none | 5711 |
| none-female   |  479 |
| none-male | 5289 |
| none-none |15716 |
+---+--+

Key: none means not set in user preferences, female-male means a woman
has overwritten a man's file and male-none means a declared male has
overwritten an account with no gender set.

I'd appreciate any views on whether there is any statistical meaning to be
pulled from these figures, apart from showing that men probably outnumber
women contributors by ten times on Commons.

If the email is displaying badly, you can find a wiki formatted table and
original generating SQL on the Commons village pump[1]. I thought this
would be of wider interest as though image revert warring is mostly an
issue for Wikimedia Commons, it is a very similar area of heated disputes
when compared to edit revert warring on Wikipedia projects. The question
popped up from someone interested in my long running 'significant reverts'
tracking report.[2]

Links:
1.
https://commons.wikimedia.org/wiki/Commons:Village_pump#Does_openly_declaring_your_gender_change_the_probability_of_having_an_upload_overwritten.3F
2. https://commons.wikimedia.org/wiki/User:Fae/SignificantReverts

Fae
-- 
fae...@gmail.com https://commons.wikimedia.org/wiki/User:Fae
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