[OSM-talk] Metrics

[John Whelan]

One quick fix for data quality would be to add a buildings_tool to iD.

This particular mapper / company is also adding lots of highways in a 
low income Africa and for that reason alone I'd prefer not to name 
them.  My concern at the moment is mapping unmapped villages and adding 
connecting highways.  Very basic stuff but if you're going to vaccinate 
against COVID then this is the very basic infrastructure stuff you need. 
Houses to do population counts are would be nice but you can approximate 
from the size of the village or hamlet.

However over the years I've seen this sort of behaviour many times.  Yes 
companies like to know what they are paying for and micro mapping school 
playgrounds might not be in their commerial interests, although if you 
sell equipment for playgrounds there could be a case.

I just wondered if we could offer them a metric which would be 
meaningful to them and reflected more what had been added rather than 
tagged changed.  This isn't data quality so much as extracting something 
useful out of their mappers' time.

Thanks

Cheerio John

Andy Townsend wrote on 10/17/2021 6:57 AM:
> On 17/10/2021 11:01, Andy Mabbett wrote:
>> On Sat, 16 Oct 2021 at 06:20, Mateusz Konieczny via talk
>> <talk at openstreetmap.org <mailto:talk at openstreetmap.org>> wrote:
>>
>> > that is why quality of paid editing is usually problematic
>>
>> Is it? Or do we only see low-quality paid editing brought here for 
>> discussion (or to the Data Working Group for reversion), while good 
>> quality paid editing goes unremarked?
>>
>>
> I'm not convinced that paid editing is "usually problematic", but I 
> think that it is fair to say that it is "usually of a lower quality 
> than editing by a non-paid mapper of similar experience". I don't 
> think that is surprising - if I buy a table from someone whose hobby 
> is woodwork it's likely to be better made than if I get a flatpack 
> from a big "Tables R Us" or similar on the outskirts of town.
>
> From a "quality of OSM" point of view, sometimes it'd be nice if paid 
> mappers had the time when fixing "obviously broken" things to 
> investigate what else is wrong.  One example I remember was where a 
> couple of mappers had (in good faith, but with unfortunately little 
> experience of OSM) merged lots of road segments together, creating 
> lots of "ref=A1;A2;A3" and "lanes=1;2;3;4".  The paid mappers who 
> fixed some of the errors tended to fix one tag but not the other, and 
> tended not to use overpass to go back in time to see the previous 
> situation before the merges (why would they? It's time consuming and 
> not well documented).
>
> However, looking at it from the other side, and going back to John's 
> original question, if I was paying mappers to map roads so that my 
> delivery company can deliver things I'd be pretty annoyed if instead 
> of mapping roads they mapped schools or hospitals instead, despite 
> that being "more helpful" to the map in $country.  If I take my car 
> into the garage and ask them to fix the exhaust, and one of the lights 
> needs fixing I don't expect them to fix that as well for free; I also 
> don't want them to do it without asking and bill me for it.
>
> Best Regards,
>
> Andy
>
>
>
>
>
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