[HOT] Projects on the HOT OSM Tasking Manager - lots of them

Sun Dec 6 15:58:38 UTC 2015

Hi Martin,

This would address one of the issues you raised. Feel free to keep the
discussion going on it:

https://github.com/hotosm/osm-tasking-manager2/issues/606

*Tyler Radford*
Executive Director
email: tyler.radford at hotosm.org
U.S. mobile: +1 617.285.2009

*Humanitarian OpenStreetMap Team *
*Using OpenStreetMap for Humanitarian Response & Economic Development*
web <http://hotosm.org/> | twitter <https://twitter.com/hotosm> | facebook
<https://www.facebook.com/hotosm> | donate <http://hotosm.org/donate>

On Sun, Dec 6, 2015 at 9:49 AM, john whelan <jwhelan0112 at gmail.com> wrote:

> Perhaps what we need to do is do a small reality check.  The HOT tile
> system is geared up to one mapper completing one tile then a second mapper
> validating it.  The first mapper then corrects any errors if any and the
> tile is validated and marked completed.
>
> Yes but that doesn't seem to be quite what happens.  In Nepal 70% of the
> mappers mapped once and it was probably their first time mapping.  If you
> invalidated a tile odds are the first mapper would never return to do any
> corrections anyway.
>
> I recently attended a physical maperthon, not a single tile was completed
> despite instructions which were followed to split the tiles to the smallest
> extent first.  Not knowing the userids at the maperthon I thought I'd go in
> and validate / give feed back what had been done.
>
> I validated one tile, project 1234, adding forty nine settlements to the
> thirty that were already there.  I gave up on another tile, not the easiest
> to map, at what distance do you decide two buildings are part of a
> settlement?  But it had a fairly large number of mappers working on each
> tile.  There has been no activity for the last nineteen days so I think we
> can safely say that project has died.
>
> The Ebola mapping, 101 mappers did more than 60% of the mapping.  3,500
> mappers did less than 40%.
>
> To me the more successful projects seem to have one validator and a small
> team mapping.  Talking to an end user of the data they much preferred
> validated maps, they were more reliable.
>
> In Nepal I worked with a small team again and we went over the tiles
> validated or not and revalidated them.  The data quality was so bad at one
> point I just went in with JOSM validation and used that to clean up and
> validate.  The rest of the team were good and went over the tiles looking
> for buildings, normally they found 30% more and this was on both validated
> and tiles marked complete.
>
> On the other end of the scale I've looked at tiles that were complete but
> not marked done.  Not every mapper feels confident enough to mark a tile
> complete.
>
> Having half a dozen mappers go over the same tile isn't really the best
> use of resources and people's time.  We don't have enough mappers and
> although they don't cost us anything it would be nice to move one or two
> from the 3,500 to the 101 catagory.
>
> I still think for some mappers if they mark a tile done then it should be
> automatically validated.  Yes somethings might be missed but I don't think
> we're after perfection or at least I hope not, but the general quality of
> work would be higher.
>
> One thing we haven't touched on is the NGOs themselves.  They have
> thousands of volunteers, perhaps if they want a particular project
> prioritised we should make it easier for them to use their own resources.
> I know the HOT training group is working on making it simpler to start
> mapping for HOT purposes.
>
> Rant over, I'll go back to sleep.
>
> Cheerio John
>
>
>
> On 6 December 2015 at 07:34, Martin Noblecourt <m_noblecourt at cartong.org>
> wrote:
>
>> Dear all,
>>
>> This is an interesting topic, I think what is important is to focus on
>> how the data will be useful for responders & communities on the ground.
>> On some requests (particularly for humanitarian operations), what we
>> really need is to obtain a first overview of an area (villages & roads)
>> fast. I've sometimes tried to put the focus on it using the instructions
>> (e.g. the projects 1343 <http://tasks.hotosm.org/project/1343> or 1262
>> <http://tasks.hotosm.org/project/1262>), however on both tasks I saw new
>> mappers spending a lot of time tracing buildings whereas it wasn't
>> necessary (yet), and (sometimes very) experienced mappers unvalidating
>> tiles because a track was missing on a corner of a task. Although the
>> latter were right to do so in absolute, in both case it wasn't really
>> helping the task being completed faster (since lots of new mapper then
>> spend time working again and again on the same task to get it perfect).
>>
>> My question is: how can we better highlight when a project is a "first
>> pass" for which it is admissible to miss a few details in order for the
>> project to be completed faster? And an additional one: on some projects
>> part of the area to cover doesn't have imagery good enough to trace, could
>> it be useful to add a button to specify that (different than marking it
>> done & leaving it unmarked) to avoid several people looking at it again and
>> again?
>>
>> Thanks & best regards.
>>
>> --
>> Martin Noblecourt
>>
>> *m_noblecourt at cartong.org <m_noblecourt at cartong.org> | Bureau/Office: +33
>> (0)4 79 26 28 82 <%2B33%20%280%294%2079%2026%2028%2082> | Skype:
>> martin.noblecourt*
>> CartONG - Mapping and information management for humanitarian
>> organizations | Cartographie et gestion de l'information pour les
>> organisations humanitaires
>>
>>
>> ------------------------------
>>
>> Message: 3
>> Date: Sat, 5 Dec 2015 20:28:50 +0100
>> From: Blake Girardot <bgirardot at gmail.com> <bgirardot at gmail.com>
>> To: "hot at openstreetmap.org" <hot at openstreetmap.org> <hot at openstreetmap.org> <hot at openstreetmap.org>
>> Subject: [HOT] Projects on the HOT OSM Tasking Manager - lots of them
>> Message-ID: <56633AF2.60902 at gmail.com> <56633AF2.60902 at gmail.com>
>> Content-Type: text/plain; charset=utf-8; format=flowed
>>
>> Hi everyone,
>>
>> Dale, among others have been working to update and review all the
>> current projects on HOT's main OSM Tasking Manager:
>> http://tasks.hotosm.org/
>>
>> After much work on their part, a lot of projects have shifted up in the
>> list.
>>
>> If you have not had a chance to visit the tasking manager lately, it
>> would be a great time to do so as there are a lot of new mapping
>> projects and existing projects that need mapping.
>>
>> We really need more regular mappers as we get more and more requests for
>> HOT mapping. HOT and OSM's value is being recognized by more and more
>> humanitarian organizations and we are very challenged to keep up with
>> the requests we get. Any amount of time you can donate to mapping is
>> very helpful.
>>
>> Tweeting and Facebooking out the MapGive "Why Map?" video would also
>> make a huge impact. They have easy to click twitter and facebook links
>> on their why map page:
>> http://mapgive.state.gov/why-map/
>>
>> And there are links to the learn to map videos they make as well.
>>
>> And of course, while you are tweeting and sharing about HOT, please help
>> spread the word about our first ever direct fundraising effort:
>> https://donate.hotosm.org/
>>
>> Cheers,
>> Blake
>>
>>
>>
>>
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>
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