[HOT] How newer mappers can help a lot with the validation process

john whelan jwhelan0112 at gmail.com
Sun Feb 14 13:06:47 UTC 2016


I think the information belongs in
http://wiki.openstreetmap.org/wiki/OSM_Tasking_Manager/Validating_data the
other one is too structured to touch.  I'll add some technical details in
but perhaps you could have some one look over the changes.  I don't think
I've changed the flow too much and I've omitted the idea of validating on a
new project.

Thanks John

On 11 February 2016 at 14:31, Nick Allen <nick.allen.54 at gmail.com> wrote:

> John,
>
> I think we could do with more information on LearnOSM - the current
> content is <http://learnosm.org/en/coordination/review/>
> http://learnosm.org/en/coordination/review/ & a couple of mentions in the
> Tasking Manager section.
>
> I'm sure there is more information in other sources as well as the wiki
> link
> http://wiki.openstreetmap.org/wiki/OSM_Tasking_Manager/Validating_data
>
> If you and a couple of other people could put a guide together & run it by
> a few people (Training Working Group?), I'd be happy to take the resulting
> document & format the text to place it on LearnOSM. Grab a few screenshots
> as well - I'll do the formatting, but I don't have time to actually write
> the text at the moment - I can cope with copy & paste & then format the
> outcome.
>
> Regards
>
> Nick
>
>
> On 11/02/16 18:29, Russell Deffner wrote:
>
> Hi all,
>
>
>
> Validation is a ‘beast’ of a discussion that in my opinion has been
> addressed in two parts: teaching/training validators and technical changes
> in the Tasking Manager.  I for one completely support building a
> ‘white-list’ option (or otherwise the option to ‘appoint’ validators) into
> the TM; however don’t want to ‘spam’ the list too much, so I think this is
> the ‘most current’ and on-point issue in github:
> <https://github.com/hotosm/osm-tasking-manager2/issues/599>
> https://github.com/hotosm/osm-tasking-manager2/issues/599
>
>
>
> However, on the training side of things; we have built a ‘higher-level’
> type of course for validation here: <http://courses.hotosm.org/>
> http://courses.hotosm.org/ but it is specific to HOT Disaster Mapping;
> there has been talk about a module for ‘general’ validation on LearnOSM,
> and Nick or someone closer involved with the Training Working Group can
> probably tell you more about that.
>
>
>
> In either case, I think there is plenty of room for improvement.
>
>
>
> Cheers,
>
> =Russ
>
>
>
> *From:* Nick Allen [mailto:nick.allen.54 at gmail.com
> <nick.allen.54 at gmail.com>]
> *Sent:* Thursday, February 11, 2016 9:19 AM
> *To:* john whelan
> *Cc:* HOT at openstreetmap.org
> *Subject:* Re: [HOT] How newer mappers can help a lot with the validation
> process
>
>
>
> There is a wiki article at
> http://wiki.openstreetmap.org/wiki/OSM_Tasking_Manager/Validating_data
>
> It needs updating.
>
> Nick (OSM=Tallguy)
> my phone is responsible for any spelling mistakes!
>
> On 11 Feb 2016 15:49, "john whelan" < <jwhelan0112 at gmail.com>
> jwhelan0112 at gmail.com> wrote:
>
> In there somewhere in a wiki or some such where we can document
> validation, what works and why and what to look for?  Perhaps put down some
> sort of service level agreement ie after validation we are only looking for
> what is requested in the instructions and for a JOSM validotian to be run.
> We expect 97% of settlements to be mapped type thing? That way people who
> wish to validate have something to feel confident about.
>
> We need to get more people into validation.
>
> Thanks
>
>
>
> Cheerio John
>
>
>
> On 11 February 2016 at 09:56, Jo < <winfixit at gmail.com>winfixit at gmail.com>
> wrote:
>
> If such a volunteer becomes more confident after a while, they shouldn't
> hesitate to actually validate the task, if all was mapped well and they
> didn't have to add/change much.
>
> When I look at finished tiles, I start with the intention to validate it.
> If I have to do too much work on it, I will sometimes simply unlock once
> again, either leaving a note it's actually complete now.
> If there is still more work than I have time for at that time, it's better
> to "invalidate", so another mapper knows where more work is needed.
>
> Polyglot
>
>
>
> 2016-02-11 14:47 GMT+01:00 Blake Girardot <bgirardot at gmail.com>:
>
>
> That is a good point John, if anyone does a second look to map in missing
> buildings in a "completed" task square you should leave a comment on the
> task square that says you looked over the completed task square and filled
> in all the missing buildings you could find.
>
> For sure it is not a waste of time to review completed task squares, but I
> agree, it probably only needs one going over before validation.
>
> In addition, this is a very helpful way for new mappers to become better
> mappers and contribute to an urgent priority project to get done well and
> fast.
>
> Tiny task squares help, but stuff still gets missed and often we don't get
> the validation stage completed in time, no matter how important it is so an
> informal review makes a big difference if that is what a volunteer wants to
> do and can contribute.
>
>
>
> Cheers,
> Blake
>
>
>
> On 2/11/2016 2:33 PM, john whelan wrote:
>
> I'm not sure this is the best use of our very limited number of
> mappers.  Just scanning a tile takes time, so the optimum use of mapper
> time is to have them scan once when they map and have a validator scan
> once.
>
> For a productivity point of view its better to have new mappers split
> the tiles twice and map a tiny tile completely than have twenty of them
> go over the same area.  From the same point of view its better to have
> them map where we have good imagery than map where quote "You may have
> to squint a bit".  Mapping whilst squinting takes more time to map the
> same area than mapping where the imagery is good.  No matter where they
> map it will be useful to someone if not a short term MSF or American Red
> Cross project and to be honest if something like Ebola crops up having
> fairly good mapping of existing highways and villages in place before
> you start helps those projects in the field at least plan out what and
> where.
>
> Cheerio John
>
> On 10 February 2016 at 10:28, Blake Girardot <bgirardot at gmail.com
>
> <mailto: <bgirardot at gmail.com>bgirardot at gmail.com>> wrote:
>
>     Hi all,
>
>     I just want to mention, that new mappers can really help with the
>     validation process by doing what they typically do: Map in roads and
>     buildings but into "Completed" task squares.
>
>     You do not need to mark a task square "Validated", but just
>     reviewing the completed squares and filling in missing things or
>     fixing up buildings that might not be mapped very well (squaring up
>     the rectangular buildings :) is immensely helpful.
>
>     I wrote a short OSM Diary entry that says basically the same thing:
>
>     http://www.openstreetmap.org/user/bgirardot/diary/36235
>
>     I just thought I would mention it because if you see projects on the
>     Tasking Manager that look "done" just know you can always help a bit
>     more by reviewing "Completed" task squares just to double check
>     nothing was missed even if you do not feel experienced enough to
>     "Validate" a task square.
>
>     This is especially true for projects where we have made a call for
>     more mappers on the email list or via twitter. Double and triple
>     checks to make sure the mapping in the instructions is actually
>     complete really helps in the process and gets the people on the
>     ground the best data we can possible generate for them.
>
>     Cheers,
>     Blake
>
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> --
>
> Nick
>
> Volunteer 'Tallguy' for
> <https://wiki.openstreetmap.org/wiki/Humanitarian_OSM_Team>
> https://wiki.openstreetmap.org/wiki/Humanitarian_OSM_Team
>
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