[HOT] Why the HOT obsession with low quality buildings in Africa ?

[AMEGAYIBO Kokou ELolo]

Hi Jean-Marc,
The majority of these tasks were created in training workshops on
OpenStreetMap in Bamako, quality control work is done afterwards by the
local community normally. I share your points of view, but for training
workshops it is our best method to channel, control the work of the newbies
and also familiarize them with the use of the Tasking Manager. I am open to
any contribution who can help us  improving our approach.
Best regard,
Le lun. 2 juil. 2018 à 08:51, Phil Wyatt <phil at wyatt-family.com> a écrit :

> Hi Jean-Marc
>
> I reckon a good place to start is to look at the project in the Hot
> Tasking Manager and find out who created the project, and for which
> organisation. A quick contact with them can probably answer your questions.
> I suspect the answer will be very different between projects.
>
> The project in Bamako look to have been initiated for OSM Mali by user AKE
> Amazan
>
> https://tasks.hotosm.org/project/3724
> https://www.openstreetmap.org/user/AKE%20Amazan
>
> Cheers - Phil
>
> -----Original Message-----
> From: Jean-Marc Liotier [mailto:jm at liotier.org]
> Sent: Monday, 2 July 2018 6:25 PM
> To: talk at openstreetmap.org
> Cc: hot at openstreetmap.org
> Subject: [HOT] Why the HOT obsession with low quality buildings in Africa ?
>
> Active in Senegal and Mali, I have noticed that changesets tagged with
> tasking-manager HOT projects produce very large numbers of buildings.
> Those buildings appear to be of very low quality. I wonder: who uses
> this data ?
>
> If it is only necessary to assess that people live there, then a
> landuse=residential is sufficient
>
> If it is necessary to count the number of dwelling units to infer
> population, then a node is sufficient (maybe along with an attribute to
> discriminate single or multi-tenancy)
>
> If the geometry is actually necessary, then I wonder if anyone is
> satisfied with those semi-random shapes that, with some optimism, may be
> identified as being in the vicinity of actual buildings (most of the
> time)
>
> Enthusiastic contributors expend an awful lot of effort in flooding the
> map with low-quality buildings. I have seen ruins, building parts,
> walls, vague shadows on the ground, rubbish heaps, market stalls, cars
> and trucks all tagged as buildings - and I'll charitably keep from
> commenting on the geometric quality of those that attempt to map actual
> buildings (and I'll leave aside the issue of HOT leads requiring the use
> of outdated imagery such as Bing instead of ESRI World in Bamako). Is it
> the most useful way to channel the energy of inexperienced contributors
> ?
>
> I often find myself wishing that HOT leads introduce them to
> Openstreetmap through Osmose quality control rather than by churning out
> buildings like demented stonemasons trying to reach their weekly quota
> of gamified task-managing !
>
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