[OSM-talk] Contribution graph

[Andy Robinson (blackadder-lists)]

Martijn van Exel [mailto:mvexel at gmail.com] wrote:
>Sent: 17 December 2009 4:04 PM
>To: Andy Robinson (blackadder-lists)
>Cc: talk at openstreetmap.org
>Subject: Re: [OSM-talk] Contribution graph
>
>Intriguing, Andy. Thanks for adding this.
>Would be nice to be able to filter out the import-users when producing
>these stats, however. Is that feasible?

The graph looks the same if I remove the top 5 user accounts (all greater
than 1% of the data and between them totalling 39% of all way data) however
the amount contributed by the top 10% of users (ignoring the top 5) reduces
to 91.5%. So basically the 90/10 rule appears to apply for normal
contributions made by the humble mapper. This is in line with what I see
locally in my own patch.

Cheers

Andy


>
>Martijn
>
>On Dec 17, 2009, at 10:18 AM, Andy Robinson (blackadder-lists) wrote:
>
>> I've added another OSM graph to the stats page. It shows the %
>contribution
>> of ways (current table, no account for history) per editor. It reveals
>that
>> 95% of the way data is contributed by just 10% of the contributor base.
>In
>> fact 50% of way data has been contributed by just 31 user accounts
>although
>> the first few of these are major imports, such as TIGER (32%), AND (2%)
>and
>> Coastlines.
>>
>> Thanks to Matt Amos for pulling the figures out of the db.
>>
>> The graph is here:
>> http://wiki.openstreetmap.org/wiki/Stats#Contribution_percentage_by_user
>>
>>
>> Cheers
>>
>> Andy
>>
>>
>>
>>
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