[Osmf-talk] Africa as a training ground was RE: google Open Buildings usage request

[Mateusz Konieczny]

Aug 1, 2021, 08:12 by dfjkman at gmail.com:

> Hi Shawn,
>
> One of the problems is the number of projects on the go at any one time,
> Africa has more HOT projects on the go than the rest of the world put
> together, many of them overlap and many of them die a natural death without
> ever being validated leaving a great deal of mess behind. Many of the HOT
> mappers are new to OSM and the same few validators tend to be spread over
> many projects and even they may not know what they are looking at in the
> satellite imagery, I suspect they also get overwhelmed with the amount of
> corrections they have to make.
>
Note that it is responsibility of HOT to avoid this.

In this case they should more effort into recruiting people who can cleanup
invalid data (either experienced mappers already or willing to stay for longer)
over recruiting even more inexperienced mappers.

Even if raw statistics like count of mapped buildings looks worse when
doing mapping properly.

If HOT validators are overloaded it is a sign of HOT mismanaging situation.
It is not responsibility of mapper community to cleanup such mapping,
it is responsibility of HOT.


>  The real problem comes where you have a particular mapper who is
> unwilling to take the advice given and continues to make the same errors
> over and over.
>
In such case their edits should be reverted.

> Then you get projects that come through and make changes to major road
> classifications, remove roads that do not appear in imagery but have been
> mapped by a local mapper and change classifications. After you make
> corrections the whole thing kicks off again with the next project that comes
> through with a new hashtag. Sort of like a 'Mad Max' movie. As a local
> mapper you either run around trying to fix the errors or slink off to some
> far flung corner and map in peace.
>
There is a big danger that some well meaning and well funded projects such
as HOT-directed remote mapping will destroy any potential local communities :(
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