On Thu, Jul 22, 2010 at 11:07 AM, Jason Cunningham <[email protected] > wrote:
> Thanks for taking the time to do this. > > Having read this a I've decided its about time I read up on licence issue! > I guess that the potential loss of a lot of data could be a reason for some > people voting against the changes > There''s also signs that the project is starting to splinter. Experimental forks are beginning to appear... > > Jason > > > On 22 July 2010 10:34, TimSC <[email protected]> wrote: > >> Hi all, >> >> To try to get a feeling for the potential consequences of relicensing, I >> have been doing analysis of edits in the UK and how contributors have voted >> on the doodle poll. I feel that we should look before we leap, regarding the >> possible impact of people who refuse to relicense. I wondered how many >> nodes, ways and relations would be transitioned in relicensing. I used the >> crude assumption that each object has only one editor, which would >> underestimate the impact of refuser contributions. I requested the biggest >> contributors to vote on the doodle poll to improve the turn out. Although I >> only have votes for 1% of individual UK contributors, doodle now has a 24% >> turn out when weighted by mapping contribution size. A few mappers account >> for a large proportion of UK data. Previously, I did not notice how many >> mappers had just done a few small changes: the median number of nodes >> contributed is only 10! I also have not considered the response rate once >> OSMF pitch the question to contributors, and what happens if the OS data >> cannot be relicensed. >> >> I want to next give my excuses for not publishing the raw statistics. Even >> with 24% turn out (by contribution size), the are a few non-committal large >> contributors (e.g. me and a few others). Unless the turn out rate is higher, >> the stats can be twisted depending on the mood I am in. But there is a >> pattern emerging. The overall UK picture seems to be fairly bright for >> minimal data loss. Every big contributor I contact votes "yes" to >> relicencing (with or without reservations). I estimate an overall data loss >> of 5% to 17% for the UK (ignoring the effect of objects with multiple >> editors). >> >> The main exception to this is a small cluster of refusers around London. >> (I am not just talking about myself here.) The worst case scenario is 50% >> data loss in the Greater London area but, really, I don't know how it would >> play out. Because of the density of mapping, there is more likely to be >> multiple editors in this area too. Basically, it's a wild card. But I would >> be surprised if there are big problems outside the London/SE area. Unless of >> course 5% is a big problem - I am not too sure how much work it would take >> to patch up omissions, even assuming a relatively smooth transition. >> >> Anyway, I never was much good at statistics! I just wanted to circulate >> something, after many contributors were kind enough to honour my request and >> vote on doodle. >> >> TimSC >> >> >> _______________________________________________ >> Talk-GB mailing list >> [email protected] >> http://lists.openstreetmap.org/listinfo/talk-gb >> > > > _______________________________________________ > Talk-GB mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/talk-gb > >
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