Hey Yuvi,

this sounds like very interesting data to look at.  Here are my thoughts:

- the Anonymization scheme sounds reasonable, and I'd like to hear from
someone else @ wikimedia who has similar experience anonymizing data sets

- you were probably already thinking about it, but we need documentation
too: a wikipage with the name of the table, data dictionary, etc... and
even a blog post to announce the newly available data.




On Sun, Aug 24, 2014 at 5:21 PM, Yuvi Panda <[email protected]> wrote:

> Hello!
>
> I've been working for the last few days on
> https://github.com/Ironholds/WPDMZ, which currently generates raw data
> on 'number of non-bot edits per country', and I'd like to run some
> stats / make some graphs based on it. Since I'd like al l my
> 'research' to be completely repeatable, I'd love it if we can make the
> 'raw data' (edits per country) publicly available on labsdb. I have
> most of the code written for it, *but* it needs anonymization.
>
> The biggest de-anonymization threats involve identifying which editors
> come from which countries, and can be executed in the following case:
>
> An editor is the only person editing from a country in a project where
> the country has low edit volume, and by a process of elimination /
> counting edits from a public source (like recentchanges), the
> individual editor can be connected to a particular country
>
> I propose the following Anonymization scheme:
>
> 1. No data for projects with less than a threshold of total
> *individual editors* in the time period for which the data is
> released.
> 2. For countries that have less than a threshold % of 'individual
> editors' in the time period, we just simply lump them in as 'other'.
>
> This removes most anonymization attacks I can think of. Thoughts? I
> can easily write up the code to generate these on a monthly basis and
> puppetize those to make the data publicly available. I think not just
> me, but lots of external researchers would benefit from such data.
>
> Thanks!
>
> --
> Yuvi Panda T
> http://yuvi.in/blog
>
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