Concerning 1) and about analyzing reverts in general, see
https://meta.wikimedia.org/wiki/Research:Revert .

To explore 5), https://meta.wikimedia.org/wiki/AbuseFilter and
https://tools.wmflabs.org/ptwikis/Filters:enwiki may be of interest.

Regards, HaeB

On Wed, Jan 29, 2020 at 12:01 PM Su-Laine Brodsky <sulainey@gmail.com>
wrote:

> Hi everyone,
>
> I’m looking for statistics about the edits that are reverted on the
> English Wikipedia. This is for purposes of explaining to the public what
> Wikipedia’s quality control processes are like. If hard numbers aren’t
> available, I’m also interested in educated guesstimates.
>
> 1) An often-quoted statistic is that 7% of edits are reverted. Is this
> still believed to be true?
>
> 2) According to
> https://blog.wikimedia.org/2017/07/19/scoring-platform-team/, 2.5% of
> edits are vandalism. There are other common reasons for reverting, and I’m
> wondering if anyone has studied their frequency. Does anyone know what
> percentage of all edits are reverted for being:
> a) Spam (as perceived by the reverter)
> b) Copyright violation
> c) Violations of the Biographies of Living Persons policy
>
> 3) Do statistics on the number of edits per day on the English Wikipedia
> (i.e. 164,000 edits per day) include edits that are blocked by the spam
> blacklists or by edit filters?
>
> 4) How many edits per day on the English Wikiepdia are prevented (blocked)
> by the spam blacklists?
>
> 5) How many edits per day on the English Wikiepdia are prevented by the
> edit filters?
>
> 6) What percentage of all reverts are made by users of Huggle and Stiki?
>
> 7) What proportion of vandalism is quickly reverted? A 2007 study
> (Priedhorsky et al) found that 42% of vandalistic contributions are
> repaired within one view and 70% within ten views - have any newer studies
> been done on this?
>
> Thanks in advance!
>
> Su-Laine
> Vancouver, BC
>
>
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